How to Fix A Slacker Boob When One Breast Produces Less Milk than the Other

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The asymmetry of life, it finds us everywhere doesn’t it?

You may be reading this particular article today because there’s something in your life that is a little off-balance.

Which in this case, it’s that you have one breast producing less milk than the other, or you could call it a “slacker boob”. It really depends on if you want to look at the bottle as half empty or half full.

But no worries mama, because you are going to get ALL of the tips I have to help you fix this slacker boob slump!

Let’s get to work!

The Reason for Uneven Milk Supply 

The reason you may have one breast that produce less milk than the other can be pretty straight forward for the most part.

When one of your breasts has began to fall short in milk production, this is usually due to the supply and demand trigger not being stimulated enough.

For instance, if you are nursing and your baby tends to favor one breast over the other – the breast getting the most action will undoubtedly produce more milk.

This is the equation of supply and demand.

If you are breast pumping to maintain your supply, a slight variation in milk production from breast to breast can be completely normal and expected. 

However, if you are noticing that one breast is producing significantly less milk than the other, it is time to address the discrepancy and put some of the tips I have for you into practice.

How to Increase Milk Supply in One Breast

When one breast produces less milk than the other we can determine that the demand switch on that breast is in a down throttle.

The easiest way for how to increase milk supply in a slacker boob is to re-implement a nursing or pumping routine that will signal a surplus supply and demand response out of the underproducing breast.

See Also: Does Mother’s Milk Tea Work to Increase Milk Supply?

Power Pumping to Even Out Milk Supply

Lets begin correcting this uneven milk supply with a targeted breast pumping routine.

If you are exclusively pumping, the method best used to correct this issue is quite simple, it just takes a little extra time.

I would recommend performing your pumping routine as usual, pump both breasts at the same time.

Once you have finished fully emptying both breasts, go ahead and wait 10 minutes and then begin again on the slacker boob.

How to power pump just one breast

Pump 20 min. / Pause 10 min. / Pump 10 min. / Pause 10 min. / Pump 10 min. = Finished 

As you can see, this is a traditional power pumping schedule. However, you are just performing it on the breast that is producing less milk than the other.

The reason you pause in between, is because every time you resume pumping, there may be another half an ounce or so waiting to be expressed. 

Every extra drop you get through this strategy will eventually begin to tell your lazy boob it needs to catch up!

Power-Up breast pumping infographic to demonstrate power pumping and how to fix uneven milk supply in one breast.

Other helpful techniques to correct uneven milk supply

In congruency with the breast pumping routine demonstrated above, you can also add other therapeutic remedies into your slacker boob solutions. 

You’ll find them below.

Use Heat

Heat is a wonderful tool that can help to promote the expression and production of more breast milk. Try taking a hot shower before you pump and really focus that water flow onto your under-producing breast. 

You can also use a designated tool that is designed to add heat during a breast pumping session to aid in milk letdown.

Like this awesome hands-free heating pack I found for you on Amazon.

Mommy Soothers Breast Heating Pack 

Try some vibration 

Did you know that vibration is an extremely effective tool to use while pumping?

Vibration on the breasts before and during your pumping session can dramatically increase milk flow, help eliminate clogs and even trigger multiple letdowns.

Using this LaVie Lactation Massager (10% off LOVEOURLITTLES10) on the breast that is producing less milk will increase the breast tissue stimulation and hopefully signal a boost in breast milk supply.

LaVie Lactation Massager  

Nursing a slacker boob back into shape

This next section will be focused primarily on the exclusively nursing mom who notices an uneven supply and how to fix lopsided breasts while breastfeeding.

How do you know if you have one breast producing less milk while exclusively nursing?

  • You may find that your baby favors one breast over the other.
  • Your baby may put up quite a fight when you attempt to feed them on the breast that is producing less milk. 
  • Look in the mirror – are your breasts two totally different sizes when they are full?

At any rate, the question is, how do you fix lopsided breasts when exclusively nursing?

This issue could have arose in any innocent way, forgetfulness. Yes, maybe you just couldn’t remember what side you nursed on last and therefore, may have given one breasts a little too mush attention too many times.

If this is the case, these cute little breastfeeding reminder tabs should do the trick!

Suggested: Catch Leaking Breast Milk: Best Nursing Cups

"Milk Supply Rescue" E-Book
Get your breast results with this FREE E-Book! A quick guide to your milk supply rescue. Click image to download.

Nursing habits that may have contributed to a slacker boob

You may have acquired a slacker boob due to nursing too frequently on one side just because it’s more comfortable. I always felt more comfortable nursing on my right side.

That is until my child with gums made of razor blades eventually wore a deep gash half way through my nipple. T.M.I.?

Which led me down the long and winding road of exclusively pumping. 

If you are looking for more guidance, support and confidence with your breast pumping and milk supply, I would recommend this inexpensive and wonderful online course, The Ultimate Exclusive Pumping Class by Milkology.

P.S. If you enroll in any course through one of my links, I will send you my Pumping Pro Course for free, here are the details.

How to fix uneven supply when breastfeeding 

Rectifying this cause may be as simple as switching up your breastfeeding position. Such as, laying down on your side to nurse (my personal favorite). 

Try a nursing pillow that will give you more support. I used the Boppy at first, but I didn’t actually find it to be as ergonomically accommodating as I would have hoped.

Try instead the My Brest Friend nursing pillow. I have seen and heard a lot of really positive reviews about this particular nursing pillow and it does look very supportive.

Find it on Amazon (try Prime for 30 days free) and get free shipping.

My Brest Friend Nursing Pillow


I think you have some pretty solid tips to help you conquer this slacker boob situation. I know it can be frustrating to see one breast producing more milk than the other. 

It kind of makes you feel like a freak, but I promise this is totally normal and can be fixed with a strategic plan!

Begin implanting the tips I gave you in this article and don’t forget to save it for later on Pinterest to refer back to!

The most important take-aways from this article are that it is normal for one breast to produce less milk than the other and fixing this uneven milk supply by pumping, massaging and vibration are simple, yet effective solutions!

I always end a post with a little treasure at the end, and here are some gems I want you to check out!

Video and e-courses designed to help you breastfeed and pump with confidence so you can just enjoy your baby and the beautiful breastfeeding relationship you can have with her.

My recommendations page 

A free eBook with my top milk boosting tips!

Read Next: Body Armor Drink and Breastfeeding: The Milk Supply Super Drink?

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