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➤ How Many Ounces Should I Be Pumping By Baby Age?
➤ What is the Average Amount of Milk Pumped in 20 Minutes?
➤ How Much Pumped Milk Should I Feed My Baby?
➤ Why You’re Not Producing Enough Breast Milk When Pumping?
➤ How to Maintain My Breast Milk Supply If I Choose Exclusive Pumping
How much milk am I supposed to pump? It’s a common question that many new moms ask, and the answer can look different for everyone. Your pumping output will depend on things like your baby’s age, how often you pump, and your milk supply. While there’s no set rule, knowing what’s typical at different stages can help you get a clearer picture of what to expect. Let’s get to understand what’s normal, so you can feel more confident and less stressed about the process.
How Many Ounces Should I Be Pumping By Baby Age?
The amount of milk you should pump varies as your baby grows. In the early months, newborns require smaller quantities, but this increases as they grow and their stomach capacity expands:
Baby Age | Amount of Milk You Should Pump per Day | Frequency of Feeding |
Newborn | 1-2 oz (30-60 ml) | Every 2-3 hours |
2-4 Weeks | 2-3 oz (60-90 ml) | Every 2-3 hours |
1-2 Months | 4-5 oz (120-150 ml) | Every 3-4 hours |
3-4 Months | 4-6 oz (120-180 ml) | Every 3-4 hours |
6 Months | 6-8 oz (180-230 ml) | Every 4-5 hours |
6-9 Months | 6-8 oz (180-230 ml) | Every 3-4 hours (day) |
9-12 Months | 6-8 oz (180-230 ml) | Every 3-4 hours (day) |
What is the Average Amount of Milk Pumped in 20 Minutes?
The average amount of milk you can pump in 20 minutes depends on factors such as your milk supply, pumping technique, and how regularly you pump. On average:
- For a New Mother (0-6 weeks): You might pump around 1-2 ounces (30-60 ml) per breast during a 20-minute session.
- For Established Milk Supply (6+ weeks): After your milk supply stabilizes, you may pump between 3-5 ounces (90-150 ml) per breast in 20 minutes.
Note that some mothers may pump more or less than this range. Hydration, diet, pump quality, stress levels, etc., can make a big difference to the amount of milk you express.

How Much Pumped Milk Should I Feed My Baby?
The amount of pumped milk your baby needs largely depends on their age, weight, and appetite. It is generally recommended that you feed your baby the same amount of milk as they would get from breastfeeding. As babies grow, their feeding needs increase:
Baby Age | Milk Needed per Day | Amount per Feeding |
Newborn | 16-24 oz (480-720 ml) | 1-2 oz (30-60 ml) |
1-2 Months | 24-32 oz (720-960 ml) | 3-5 oz (90-150 ml) |
3-4 Months | 24-32 oz (720-960 ml) | 4-6 oz (120-180 ml) |
6 Months | 24-32 oz (720-960 ml) | 6-8 oz (180-230 ml) |
6-9 Months | 24-30 oz (720-900 ml) | 6-8 oz (180-230 ml) |
9-12 Months | 24-30 oz (720-900 ml) | 6-8 oz (180-230 ml) |
Note: Some babies may require slightly more or less, depending on their growth and developmental needs.

Why You’re Not Producing Enough Breast Milk When Pumping?
It's common for new mothers to worry about milk supply, especially if you're exclusively pumping or supplementing breastfeeding with pumped milk. If you're not producing enough milk while pumping, several factors could be contributing, but the good news is that you can address the issue with a good breast pump. It is the key to effective milk expression.
Here is a list of the most common reasons and how you can solve them:
Low Milk Supply
Check your milk supply while pumping and breastfeeding to ensure you're getting enough. If it is low in both scenarios, you may have production issues. What could cause this, and how to solve it? Infrequent pumping or breastfeeding is one of the top causes. While you can't control your baby's hunger, you can pump more frequently. Stress, fatigue, and illnesses can also affect your milk supply. So, dedicate time to rest and destress. Finally, avoid smoking and develop a healthy diet.
Improper Breast Pump
The breast pump you are using also has a big impact. If you are still using manual pumps, this may be your sign to move on to the more advanced ones. Electric and wearable breast pumps are more effective and efficient. They pump automatically, so you can use them hands-free. Effectively, they are also less tiring to use.
If you are looking for high-quality pumps, you should check out the Momcozy M9, Momcozy M5 and Momcozy Air 1. Each one has unique features that make it better than other alternatives. They may offer customizable settings, natural pumping movement, or transparent tops that facilitate milk volume monitoring.
The Momcozy M9 Mobile Flow™ Hands-Free Breast Pump is another great choice, offering high efficiency with suction up to -300mmHg and personalized settings via its app. It's portable, comfortable, and adjustable for both comfort and milk output, making it ideal for busy moms. Ready for a better way to pump? 🤱✨ Try the Momcozy M9 today!
The Momcozy Air 1 Ultra-Slim Breast Pump is designed for modern moms who prioritize discretion, efficiency, and convenience. Momcozy Air 1 is the thinnest wearable breast pump on the market, measuring just 2.4 inches thick—22% slimmer than the M9 Mobile Flow™. Offering a nearly invisible pumping experience, Momcozy Air 1 allows moms to pump confidently anywhere—whether at work, in public, or at home. ✨ Get your Momcozy Air 1 and simplify your routine.
The Momcozy M5 breast pump is a good choice. It has three pumping modes and nine gears, which can meet the needs of most mothers. It weighs 230g and is lighter. 🎯 Try the Momcozy M5 now and pump with confidence!
Improper Pump Settings
The pump setting can also affect milk production and milk flow. Suppose the suction is too strong. It will cause pain and discomfort, which will affect the release of oxytocin - the hormone that promotes milk flow. On the other hand, if the suction is too weak, the pump will not be able to effectively express milk. In both cases, you will not be able to empty your breasts. That will affect your supply over time. So, adjust the pump settings to find the strongest suction that still feels comfortable. Adjust as needed while you are pumping.

Breast Pump Malfunction
Your breast pump may be damaged. Contact customer support to get it serviced or buy a new, high-quality one.
Wrong Flange Size
Even if the suction and speed are right, using the wrong flange size can feel uncomfortable and limit milk flow. This also leads to incomplete emptying, which reduces your milk supply over time.

Damaged or Dirty Breast Pump Parts
You also have to maintain breast pumps. If it has been a while since you cleaned it, or if you have never cleaned it, this is your sign to do so. But if all parts are clean, some may be damaged. The good news is that stores like Momcozy offer breast pump parts for purchase. Thus, you can easily replace the dysfunctional ones.
Improper Posture When Pumping
What is your position while pumping? Please note that you cannot lie down when pumping. The recommended position is to be sitting or standing up, with a straight back, shoulders relaxed, and feet on the ground. This encourages milk flow. If you had a C-section, a reclined position may be better for you. You can use pillows, armrests, and nursing bras to make the experience more comfortable.

How to Maintain My Breast Milk Supply If I Choose Exclusive Pumping
Exclusive pumping can be demanding, but with consistency, it’s possible to maintain a healthy milk supply. Here are some strategies to help:
- Aim to pump every 2-3 hours, even if you don’t feel like you have enough milk. Regular pumping signals your body to keep producing.
- Drink plenty of water and eat nutrient-rich foods. Your body needs good fuel to produce milk, so don’t neglect your own health.
- If you're struggling with supply, power pumping (mimicking cluster feeding) can stimulate milk production. Try pumping for 20 minutes, resting for 10 minutes, then pumping again for 10 minutes.
- Gently massage your breasts before and during pumping. This can help with milk flow and prevent blocked ducts.
- Make sure your pump’s flange size is appropriate. An ill-fitting pump can cause discomfort and reduce milk output.
If you are exclusively pumping, remember that breast milk production works on supply and demand. The more frequently you pump, the more milk your body will produce. However, it’s also important to take care of yourself to avoid burnout.

When to Seek Help
If you've tried the above strategies and are still struggling with milk production, it might be time to seek help:
- If you're pumping significantly less milk than your baby needs, despite frequent pumping.
- If you experience ongoing pain while pumping, or develop symptoms of mastitis (painful, swollen, red breast tissue).
- If your baby isn't gaining weight as expected, despite feeding regularly.
When to Supplement with Formula
If your breast milk supply is insufficient and you've exhausted ways to boost it, supplementing with formula might be necessary to ensure your baby gets enough nutrition. Here’s when you should consider formula supplementation:

- If your baby is consistently hungry and not gaining weight as expected, formula can help fill the gap until you’re able to improve your supply.
- If exclusive pumping becomes overwhelming, and you feel stressed or exhausted, using formula temporarily can help reduce the pressure.
- In some cases, medical conditions such as hormonal imbalances or low milk production may require formula supplementation.
FAQs
How Can I Safely Transition From Exclusive Pumping to Breastfeeding?
Transitioning from exclusive pumping to breastfeeding requires patience and consistency. Below is how you can make the switch:
- Start by offering the breast after your baby is used to a bottle. This gives them time to adjust and figure out the latch without feeling rushed or confused.
- Engage in skin-to-skin contact to encourage your baby’s natural instincts to latch. This helps with bonding and stimulates milk production.
- Initially, offer the breast as often as possible to increase supply and ensure your baby learns how to latch correctly.
Is It Normal for Pumped Milk to Look Different at Different Times of Day?
Yes, it's completely normal for breast milk to look different throughout the day. Milk changes in consistency and appearance based on several factors:
- Milk produced in the morning tends to be richer in fat and calories, while milk produced later in the day may have a higher water content.
- As milk is pumped, you may notice a separation of fat. When this happens, it’s just a sign that you have rich milk. Shaking the container can mix it back together.
- Your own hydration levels and diet can influence the color and consistency of your milk. If you're dehydrated, your milk may appear thinner.
Can I Combine Milk From Different Pumping Sessions in One Bottle?
Yes, you can combine milk from different pumping sessions as long as the milk is from the same day and has been stored correctly. Note:
- Make sure that milk from different sessions is combined before it has been refrigerated for more than a few hours. If you combine milk from sessions that were refrigerated separately, the milk should be used within 24 hours.
- Do not mix warm milk with cold milk. Always cool fresh milk in the fridge before adding it to milk that’s already chilled or frozen.
How Do I Know if My Baby is Getting Enough Milk If I’m Exclusively Pumping?
If you're exclusively pumping, you might feel uncertain about whether your baby is getting enough milk. Check out some signs your baby is consuming enough:
- Your baby should steadily gain weight over time. Regular check-ups with the pediatrician will monitor this.
- A baby who is getting enough milk typically produces six or more wet diapers and at least 3 to 4 dirty diapers a day.
- If your baby seems full, content, and doesn’t cry excessively after a feeding, it's a good indicator that they’ve had enough milk.
What Should I Do if My Baby Doesn’t Latch Well After Exclusive Pumping?
If your baby is struggling to latch after being fed bottles for a while, here are some tips that may help:
- Nipple shields can help your baby latch more easily if they’re accustomed to bottle nipples. Over time, your baby may get used to the breast again without the need for the shield.
- Try breastfeeding when the baby is sleepy. Sometimes, babies latch more easily when they're in a relaxed, sleepy state.
- Slowly begin to offer the breast before transitioning back to bottle-feeding, allowing your baby to re-familiarize themselves with nursing.
Final Words
Don’t stress about hitting a specific target every time you pump. The amount you produce can vary from day to day, and that’s totally normal. What matters most is staying consistent and patient. If you ever feel unsure or need advice, don't hesitate to seek medical aid.