If you’re reading this, congrats on your newly arriving baby! I suspect you’re doing everything you can to help your older child prepare for their new sibling. And if they’re still nursing, you’re probably wondering how a nursing toddler will affect your colostrum output in the early days of breastfeeding.

The short answer: It will be fine! But if you want more details about whether you will make enough colostrum while nursing your toddler, keep reading.

Will my body make colostrum if I’m still breastfeeding an older baby or toddler?

If you nurse while pregnant, your supply will dip sometime towards the end of the first trimester. There’s a good chance that, by 20ish weeks, your supply will dwindle to pretty much nothing (it may be later for some women; it just depends).

RELATED: Breastfeeding during pregnancy – what you need to know

RELATED: Tandem nursing a newborn and toddler

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Breastfeeding through pregnancy may make you more tired or may even make nausea worse. I found it helpful to night wean my kids when I was pregnant (although they still nursed a little during the day time).

RELATED: How to gently night wean your toddler


If your nursling is a toddler, your decreased supply won’t be a problem. Just make sure they have plenty of other nutritious foods to supplement.

If your nursling still gets a significant portion of their calories from breastfeeding (say, if they’re 6-12 months old), make sure to watch your output carefully and supplement if necessary.

RELATED: Baby led weaning approach to starting solids

A lot of baby foods are just watered down veggies, which don’t provide the fats and proteins your child needs. Make sure to check out Serenity Kids baby food for clean, whole foods that contain healthy oils and proteins for your growing toddler (and get 15% off with the code EBM15).

Eventually, your body will switch over to making colostrum again. You don’t have to do anything (just like with your first pregnancy); it just happens.

Note: Colostrum tends to taste saltier than mature milk because it contains less fat and sugar. Some toddlers don’t like the taste of this type of milk and will wean on their own during your pregnancy. Many don’t care (My friend said she could have been producing motor oil and her child still would have drank it) and will happily continue nursing.

Will I make enough colostrum for my newborn if I’m tandem nursing?

After your baby is born, colostrum, a thick yellow-gold liquid, is the first milk you produce. There’s not a large volume (you’ll only make a few spoonfuls at a time), but it’s easier for your newborn to take from you and it’s full of antibodies.

If you’ve had a hospital birth, you’ll likely have a day or two in the hospital before you go home. In that case, you’ll only see your toddler a few times during those days. Just let your baby nurse as much as they want to, and you don’t have to worry about your older child taking all your colostrum.

And if you are home with your toddler and newborn before your milk comes in, just make sure your newborn nurses first, and then let your toddler nurse afterwards. There will be plenty of colostrum for your baby.

Will my mature milk come in too early if I’m tandem feeding?

Your mature milk is signaled to come in by the delivery of your placenta. Your progesterone and estrogen levels come crashing down, while your prolactin levels increase.

Within about 2-5 days, your milk will come in. This has nothing to do with your toddler nursing, so don’t worry about letting your older baby cuddle up for snuggles and milkies. If you’re comfortable with it, you can even let your older and younger nurslings feed at the same time. It’s a really sweet bonding experience.

Can I still nurse my toddler after my baby is born?

You can totally continue to nurse your toddler after your baby is born! It’s a sweet way to build their relationship.

sisters newborn and toddler holding hands while breastfeeding

Some people will tell you to let your newborn nurse first so they don’t miss out on any milk. That’s not a bad idea, but if you’re engorged, you may want to let your older nursling go first. Their stronger latch can bring you some relief, and the fattier, more caloric hindmilk will be left for your newborn.

RELATED: Engorgement relief for the first week breastfeeding

Some tandem feeding moms deal with nursing aversion, where they feel agitated or like their skin is crawling when they breastfeed. Often, this only happens with the toddler but not the younger child.

If this happens to you, don’t feel guilty or ashamed. You’re not a bad mom, it’s just something your body and hormones have done to you. I’ve written a whole article with ideas on how to get relief from breastfeeding aversion.

RELATED: Nursing aversion – When breastfeeding isn’t magical

Conclusions on colostrum levels when nursing a newborn and toddler

I hope this post assures you that yes, you can continue to nurse your toddler during your newborn’s early days without worrying about not making enough colostrum.

Remember, adding a new baby into the mix is a big adjustment, whether or not you choose to tandem nurse. Even if you and/or your toddler are struggling with your new roles, it’s going to be okay. Good luck with your growing family, and let me know any questions you have in the comments.