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Let’s Solve Your Baby’s 12 Month Sleep Regression

Around your baby’s first birthday they may experience the 12-month sleep regression. Learn why the one-year sleep regression happens and how to handle it with your new etoddler!

dad and son during 12-month sleep regression

Parenting is a humbling experience on so many levels. Just when you start to feel like you’ve got the hang of your baby’s sleep routine, something changes and bam! It can feel like you’re back to square one with new sleep problems.

It’s funny how so often the thing that we’re trying to foster in our kids—growth—is exactly what throws off our parenting groove.

As you approach the first full year of your baby’s life, you might notice that the sleep methods you usually rely on are starting to miss the mark.

Let’s talk about sleep challenges you might encounter at the one-year milestone in this blog post.

Baby D.R.E.A.M. System mockup

Learn how to stop nursing to sleep and teach independent sleep habits with The Baby Dream System, my sleep training course designed for babies 4 months through 2.5 years old. You’ll learn how to teach your baby to sleep independently, wean night feeds, and encourage longer naps and night sleep! Learn more here.

Is there a Sleep Regression at 12 Months?

It’s not likely that your little one will experience every single one of the common sleep regressions, including the 4-month sleep regression or 6-month sleep regression. However, there’s a chance that you could get an unwelcome gift around their first birthday.

Say hello to the 12-month sleep regression.

By that first birthday celebration, chances are you’ve made it through at least one or two sleep regressions already. It might even feel like you just wrapped up the 9-month sleep regression. So how can this be happening again, and so soon?

It can be frustrating to know that even after all the hard work you’ve put in—helping your baby develop a predictable sleep schedule and good sleep habits—there’s no stopping a regression.

This new toddler sleep regression is often referred to as the 12 month sleep regression, but you might notice the signs a little later or earlier. It mostly depends on how rapidly your little one is growing and developing.

Whether you notice signs of a sleep regression around their first birthday, or whether it is more like an 11 or 13-month regression, it’s likely due to the same reason: your baby is growing into a toddler!

12 month sleep regression

Why Does my 12 Month Old Fight Sleep?

Similar to the 6 month sleep regression, 9-month sleep regression, and 18 month sleep regression the 12-month sleep regression is due to developmental milestones. This regression happens because of all of the exciting new cognitive and physical developments in your baby’s life.

At around 12 months of age, your little one’s days are filled with challenging and rewarding pursuits. They may have said their first words, are learning new words, taking first steps, and honing fine motor skills.

Your baby’s brain is going through incredible growth!

All of these things make for a very stimulating awake environment. That means your toddler might have a hard time winding down.

Along with growing bodies and brains, your baby is also growing an opinion. They’re beginning to realize that they prefer not to miss out on the day’s action—or time with you!

They start to fight naps and bedtime because they know there’s a more fun alternative with all the new things they can do.

When it comes to sleeping versus spending time with mom or dad testing out all their newly learned skills, chances are they would prefer the latter. And can you really blame them?

The good news is this regression can leave just as suddenly as it started—as long as you remain consistent and avoid introducing new habits.

12-month sleep regression due to baby practicing new skills

Signs of the 12 Month Sleep Regression

Some signs that your baby may be experiencing the 12-month regression include:

Seeing some (or all) of these signs for 3+ days in a row means you’re probably seeing the 12-month sleep regression in action.

So what makes the 12-month sleep regression different from the others? How long will it last? And will the same tricks and adjustments you made with earlier regressions work with this one, too? Let’s find out!

How Long is the 12-Month Sleep Regression?

It never feels like it in the moment, but try to remember that sleep regressions are a temporary phase. All of the hard work you put in to having a good sleeper has not gone out the window. You’ll get back there again!

If you notice signs of the 12-month sleep regression consistently for a few days in a row, you can probably expect them to persist for 1-2 weeks.

In the meantime, let’s address a couple other factors that might contribute to your one-yea old’s sleep disruption during this time. These factors might occur at the same time as the regression, and can make it last longer.

one year old doesn't want to sleep because sleep regression


“She must be teething!” became a catchall phrase around my house when my daughter was around 6 months old. We threw it around pretty much whenever she was fussy. If it had been true every time we said it, she’d have more teeth than a shark!

While it’s true that erupting teeth can be uncomfortable for your baby, studies have shown that an incoming tooth will typically only cause sleep-disrupting discomfort for 1-2 days before breaking through the gums.

If you notice sleep disruptions for more than a few days and there’s no evidence of a new tooth coming up, teething is probably not the issue. Sleep regression is the more likely culprit.

See how to help your teething baby sleep if that’s the culprit!

12 month old separation anxiety

Separation Anxiety

Your 12-month old is learning so much about the world, and with that new awareness often comes new caution.

It’s common for your little one to become more anxious about being away from you. This separation anxiety often peaks around one year.

Combined with a new awareness that you’re leaving them alone in their room to sleep, you can see why your toddler may start to put up a fight during sleep times.

With things like separation anxiety making the 12 month sleep regression even more difficult, you may be wondering: what are some things that I can do to help make this easier on everyone?

1 year old baby playing

Getting Through the 12-Month Sleep Regression

Don’t change the sleep schedule. It may be tempting to switch up the sleep routine in response to a sleep regression, but resist the urge. Now is not the time to make big changes to your 1-year old’s schedule.

Most one-year olds are physically capable of sleeping 10-12 hours without night wakings. They also still need 2-3 hours in naps each day.

Don’t attempt to make a nap transition to one nap just yet or introduce dependent sleep practices (like rocking back to sleep).

While these things might seem like logical responses to nap-fighting and frequent night-wakings, big changes like this can actually be more disruptive in the long-term.

Consistency is comforting to your toddler. Try not to deviate from your normal bedtime routine and nap time routines. The regression is temporary—consistent routines will help things get back on track quickly when the regression is over.

Keep encouraging your little one’s independent sleep habits as much as possible. Try not to make any major adjustments to their sleep environment (like their room or their crib).

Your sweet baby might grow to rely on any changes you make during this regression. Don’t start any bad habits you don’t want to keep doing long-term.

You can choose a sleep training method and be consistent with it to help your child get back on track with their sleep. You may also need to do sleep training for naps if your baby is struggling with daytime sleep.

12 month old entering sleep regression phase

Give some extra love. All of these new milestones mean your baby is going to need more reassurance and attention from you.

Extra playtime, more snuggles, and more attention from their favorite grown-ups during the day can go a long way to helping curb separation anxiety.

The more your little one knows you’re there and they can depend on you, the easier it will be for them to grow confident in their new-found independence.

If your baby has been consistently able to fall asleep independently in their crib up to this point, and without any sleep associations, keep encouraging that behavior.

Independent sleep and good sleep habits are the best way to avoid sleep regressions altogether!

This might also be a good time to introduce a new comfort item, like a stuffy or lovey. You may find this helps your little one self-soothe easier and focus less on your absence at bed times.

baby boy outside playing

Stay active during the day. If your little one is waking frequently during the night, it might mean they need more physical activity during the day. Try to give them plenty of opportunities to test out their new skills and encourage physical activity to tire out their growing bodies and minds.

They’ll need lots of practice with their new physical skills like walking, talking, and doing all their other fun new tricks during the day to ensure they don’t want to test them all out at night.

If going down for a second nap is a major battle, consider shortening the first morning nap or pushing the second nap back an hour. This allows more awake times for activities between baby’s sleep times and gives your baby more time to tire themselves out.

See my recommendations for baby wake windows to make sure your baby has enough time in between naps.

Amy Motroni