Sleep regression, growth spurt, or nursing strike: the 3am guide

It was 3am. Baby I. had been awake for an hour — crying, wanting the breast, rejecting the breast, wanting the breast again.

And there I was, phone in my face, typing something I’m pretty sure you’ve also Googled:

“baby crying a lot not sleeping is this normal”

And then I fell down the hole. Because the results said: sleep regression. Wait, no — growth spurt. But it could also be a nursing strike. Or maybe all three at once. Friends, I used to laugh at my brother and sister-in-law — who also have a baby slightly older than Baby I. — and tell them they were making it all up, that they were exaggerating, that they were being dramatic… until it happened to me. Jajaja.

Spoiler: there’s no 10-second answer. But there is a way to tell them apart. And nobody explained it to me in plain language before I needed it.

This is what I wish I’d read at 3am.

First, the most important thing: at 3am they all look the same

Your baby is crying more than usual. Not sleeping like before. Wants to eat constantly — or completely rejects the breast. You’re exhausted and starting to think something is seriously wrong.

That could be any of the three. Or none. Or two at the same time.

But here’s the key: context changes everything.

Your baby’s age, when it started, whether they settle after feeding or not — those details matter more than they seem at 3am.

What is a sleep regression?

A sleep regression happens when your baby’s brain goes through such a significant developmental change that it literally reorganizes their sleep patterns.

The most notorious — and the most brutal — is the 4-month regression. But there are also regressions at 8–9 months, 12 months, 18 months, and 2 years. (Am I ready for the ones still coming? I don’t think so. But we’ll get there, one at a time.)

How to identify it:

• Your baby was sleeping (relatively) well and suddenly stopped
• Naps got shorter or disappeared (Friends, nap time is when I manage to sneak in a quick shower. At least I’m clean. Jajaja.)
• More night wakings than before
• No fever, not sick, just… not sleeping
• The timing lines up with a known regression period

What it is NOT:

• It’s not that your baby “regressed” to something bad. They grew.
• It’s not that you did something wrong. This is completely normal development.
• It doesn’t last forever. Typically 2 to 6 weeks.

(Yes, 6 weeks can feel like a lifetime. I’m not going to lie to you.)

What is a growth spurt?

A growth spurt is exactly what it sounds like: your baby is growing physically and needs more fuel.

The most common ones happen around 3 weeks, 6 weeks, 3 months, 6 months, 9 months, and 12 months. But they can happen at any time.

How to identify it:

• Your baby suddenly wants to eat MORE than usual — and settles after feeding
• It doesn’t last long: usually 2 to 7 days
• They may be fussier, but sleep isn’t necessarily destroyed
• Sometimes, after the spurt, clothes that fit last week suddenly don’t

What it is NOT:

• It doesn’t mean you don’t have enough milk. It means your baby is asking your body to produce more.
• You don’t automatically need to supplement. If the baby is feeding, wetting diapers, and gaining weight, trust your body.

What is a nursing strike?

A nursing strike (or breastfeeding crisis) is specific to breastfeeding — and it’s the most confusing of the three because it can look exactly like the other two.

It happens when there’s a mismatch between what your baby is demanding and what your body is producing in that moment. The supply-and-demand system gets temporarily thrown off.

It can be triggered by a growth spurt, changes in your routine, stress, returning to work, or simply a natural adjustment period.

How to identify it:

• The frustration is specifically at the breast — baby latches, pulls off, cries, tries again
• Baby may completely refuse the breast for a short period
• Your supply may feel lower than usual
• Baby seems frustrated during the feeding, not just before or after

What it is NOT:

• It’s not a sign that breastfeeding is over. Most resolve on their own within 2–5 days.
• You don’t automatically need to give formula — unless baby isn’t gaining weight. In that case, yes, call your doctor.

The table I wish had existed

	Sleep regression	Growth spurt	Nursing strike
When	4m, 8-9m, 12m, 18m, 2y	3w, 6w, 3m, 6m, 9m, 12m	Any time
Main sign	Won’t sleep	Wants to eat more	Frustrated at the breast
Typical duration	2–6 weeks	2–7 days	2–5 days
Settles after feeding	Sometimes	Yes	Not always
Breastfeeding-specific	No	No	Yes

What if it’s two at the same time?

Yes. It can happen. And it’s actually quite common.

A growth spurt can trigger a nursing strike. A sleep regression can overlap with a spurt. Your baby doesn’t know this is too much for one person.

In that case: surviving counts as a strategy.

What you can do with each one

If it’s a sleep regression:

• Adjust your expectations temporarily (easy for me to say, I know)
• Keep the routine as consistent as you can — it helps more than it seems
• Ask for help if you can: night shifts, someone taking the baby in the morning
• Don’t start habits you don’t want to maintain forever — unless you don’t care, and it’s okay if you don’t

If it’s a growth spurt:

• If breastfeeding: offer more frequently. Your body will adjust.
• If formula-feeding: check the age-appropriate amount guidelines — they may need a little more
• It won’t last long. Really.

If it’s a nursing strike:

• Keep offering the breast, even if she rejects it at first
• Pump if she completely refuses — to keep your supply going
• Reduce stress as much as you can (I know, sounds impossible)
• If it lasts more than a week or baby isn’t gaining weight: find a lactation consultant

The question that matters at 3am

It’s not which one is it?

It’s: is my baby eating, wetting diapers, and gaining weight?

If the answer is yes — you’re in hard territory, but you’re okay.

If the answer is no — call the doctor. Not because everything is wrong, but because you deserve real answers from someone who can actually see your baby.

And if the answer is “I don’t know” — that’s valid too. Motherhood has a lot of nights where we just don’t know. And we keep going anyway.

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Which of the three have you been through? Or all three at once? Tell me in the comments — because this topic has as many versions as there are babies, and every single one deserves space here.