One of the questions we hear from mums all the time is, "Why am I pumping less milk than I used to?" It can feel really discouraging when you finish a pumping session, look at the bottle and wonder if your supply has suddenly dropped.
Before you assume your pump isn't working - or start looking for a new one - it's worth checking a few simple things first. Often, a small adjustment to your routine or equipment can make more of a difference than you think.
Every mum's breastfeeding journey is different, so be kind to yourself while you work through the basics.
Quick answer
If you're wondering how to increase milk output when pumping, start by checking the simple things first. Your output can naturally change throughout the day, and factors like flange fit, worn pump parts, suction settings and your pumping routine can all affect how much milk you're able to express. If you're still concerned after making these checks, an IBCLC can help.
What should I check if my pumping output is low?
Before blaming your pump, work through these eight checks:
1. Remember that output changes throughout the day.
Many mums naturally pump more milk in the morning and less later in the day.
2. Check your flange size.
A flange that's too big or too small can affect comfort and milk removal. Our Breast Pump Flange Guide can help you choose the right fit, and our Bubka Flanges and Inserts are available in a range of sizes.
3. Inspect your duckbill valves and diaphragms.
These silicone parts wear over time. If they're stretched, torn or no longer sealing properly, suction can decrease.
4. Check your pump assembly.
Even one loose connection can affect your pump's performance.
5. Try different suction levels and modes.
Higher suction isn't always better. The most effective setting is usually the one that's both comfortable and removes milk well.
6. Use gentle breast compressions.
Many mums find compressions during pumping encourage better milk flow.
7. Keep a consistent pumping routine.
Regular sessions often support milk removal better than pumping for longer but less often.
8. Replace worn pump parts.
If your pump isn't performing like it used to, worn parts may be the reason. Replacing them with genuine Bubka Pump Parts can help keep your pump working as intended.
Where Bubka products naturally help
Sometimes it's not about buying a different pump - it's about making sure the one you're using fits well and is performing properly.
Having the correct flange size and replacing worn pump parts when needed can make pumping more comfortable and help your pump work efficiently. If you're still deciding which type of pump suits your lifestyle, our guide to wearable breast pumps vs traditional breast pumps explains the differences and what to consider.
When to get extra support from an IBCLC or health professional
If you've worked through these checks and you're still worried about your pumping output, it's a good idea to speak with an IBCLC or your healthcare professional.
They can assess your pumping routine, flange fit and feeding plan, and provide personalised advice. The Australian Breastfeeding Association also has excellent evidence-based information for mums with questions about expressing and milk supply.
FAQs
Is it normal to pump less milk in the afternoon?
Yes. Many mums naturally express more milk earlier in the day and less later on.
Can the wrong flange size affect pumping output?
Yes. A poor flange fit can affect comfort and how effectively milk is removed.
How often should I replace duckbill valves and diaphragms?
Check them regularly for signs of wear, such as stretching or tears, and replace them according to your pump manufacturer's recommendations.
Should I always use the highest suction setting?
Not necessarily. A comfortable setting that removes milk effectively is usually the best option.
When should I seek help for low pumping output?
If you've checked your equipment and routine but you're still concerned about your milk supply or pumping output, speak with an IBCLC or healthcare professional.
Next step
Low pumping output doesn't always mean low milk supply. Often, checking a few simple things can make all the difference. Take it one step at a time, trust your instincts, and remember that you don't have to figure it all out on your own.
