Expert Strategies to Help You Manage the 18-Month Sleep Regression

If your toddler, who once snoozed soundly through the night, is suddenly waking up in tears, refusing naps or fighting bedtime, you may be in the thick of the 18-month sleep regression. While it can be frustrating for parents, this regression is often tied to big leaps in independence. “Unlike earlier regressions linked to physical development, this phase is largely driven by behavioral and emotional growth,” says Kelly Brown, RN, director of nursing for baby-monitor brand Harbor. “At this stage, toddlers often begin testing limits and may exhibit increased separation anxiety, both of which can significantly affect their sleep.”

While big developmental leaps make this more of a progression than a regression in the grand scheme of things, it can be challenging to navigate nonetheless. Alec P., a father of five in Minneapolis, says that two of his kids struggled hard with the 18 month sleep regression; they went from sleeping all night to waking up three or four times. “I think the hardest part was dealing with the general lack of sleep and interrupted sleep,” he adds.

The good news? This phase is temporary. With patience and consistency, you and your toddler will make it through the 18-month sleep regression. Read on to get tips from real parents and experts.

Key Takeaways

• The 18-month sleep regression is a temporary disruption in sleep patterns. It can be caused by your child’s behavioral growth and development, separation anxiety and teething.
• Some 18-month sleep regression signs to look for include frequent night wakings, nap resistance and sudden bedtime battles.
• To help your toddler get back on track, be consistent with their naptimes and bedtimes, even if they don’t fall asleep right away. Additionally, offer them comfort and reassurance when they need or ask for it.
• Most regressions last two to six weeks, but this will vary by child. If the regression lasts longer or doesn’t seem to be improving, call your pediatrician.

What Is the 18-Month Sleep Regression?

The 18-month sleep regression is a period when toddlers who were previously good snoozers suddenly struggle with sleep. It can happen seemingly overnight; your child may start waking multiple times, fighting naps or refusing to go to bed at their usual time, explains Nick DeBlasio, MD, medical director of the pediatric primary care center at Cincinnati Children’s Hospital Medical Center. This regression is developmentally normal, and not a sign of a problem.

Around the 18-month mark, toddlers experience a boost in independence, emotional awareness and separation anxiety—all of which can surface at bedtime, Brown explains. “The key is balancing comfort with consistency: a predictable routine, a safe sleep environment and calm reassurance will help your child (and you) get through this regression.”

18-Month Sleep Regression Signs

Every toddler is different, but there are some common signs to look out for when it comes to the 18-month sleep regression. Night waking is common; your toddler might cry or call out for you multiple times a night. Many families also notice nap resistance, where a child who used to nap reliably begins refusing daytime sleep. Bedtime battles may appear as stalling, tantrums or outright defiance about going to bed. Some children also experience heightened separation anxiety, protesting when a parent or caregiver leaves the room. And, of course, all of this sleep disruption can lead to mood changes and extra crankiness during the day from sheer overtiredness.

Why Do 18-Month Sleep Regressions Happen?

At 18 months, toddlers are experiencing an incredible boost in growth, and big developmental leaps can throw sleep out of whack. One of the biggest reasons for the 18-month-old sleep regression is a newfound sense of independence. Toddlers are just figuring out that they have autonomy, and this can mean testing boundaries at bedtime. “Toddlers are learning they can say ‘no’ and make choices, and bedtime quickly becomes a stage where they practice that,” Brown says.

Increased separation anxiety also plays a role. “Kids want to be with their families—and also be where the action is at,” DeBlasio says. (Basically, your toddler has FOMO.)

Your tot’s rapid language and motor development is also a major contributor to the 18-month sleep regression. They’re learning to run, climb, talk and more—all of which can make their little brain feel extra busy at bedtime.

Finally, teething can be another culprit; those first molars are painful and can easily disrupt sleep.

How Long Does the 18-Month Sleep Regression Last?

Most families notice the 18-month-old regression lasts anywhere from two to six weeks. Some toddlers bounce back quickly, while others take longer to settle into a new rhythm. Unfortunately, there’s no set time for when a regression will end. That said, your response can play a role in the duration of a sleep regression, DeBlasio says. By maintaining a consistent bedtime routine, reassuring your child during nighttime wakings and allowing them to self-soothe, you can help get things back to the status quo sooner.

Tips to Get Through the 18-Month Sleep Regression

While it can be exhausting, there are ways to make the regression easier on both you and your child. Below, some tips from the experts on how to get through it.

Be consistent

Sticking to a consistent routine is one of the most important strategies, as toddlers thrive on predictability. Maintaining the same bedtime and nap schedule will help anchor them. Parents agree. Alec P offers, “Having structure seemed to help the kiddos know what comes next and let me have a process to fall back on during those nights (mornings too!) when the sleep deprivation hits hardest.”

Don’t drop the nap

If your tot wages a battle at naptime, you may be tempted to drop the nap, but Brown advises against this, as it could lead to overtiredness. “Most 18-month-olds still benefit from a daily nap, even if they seem resistant. Giving up naps too early can result in increased nighttime difficulties,” she says. Even if your toddler doesn’t fall asleep, creating a quiet, low-stimulation space for them to rest and relax can help quell this concern.

Provide reassurance

If your toddler is waking up in the middle of their nap or at night, it’s important to provide some comfort—but be smart about how you do it, advises DeBlasio. He cautions against introducing new habits that may be hard to break later, such as rocking them to sleep. Giving your toddler extra reassurance during the day through cuddles, playtime or with one-on-one attention can also help with nighttime separation anxiety. A comfort object, like a lovey or stuffed animal, can also come in handy.

Offer them control in small doses

A big part of the 18-month-old sleep regression comes from toddlers craving control. Use their growing independence to your advantage and “offer toddlers small, manageable choices,” suggests Brown. For example, let them pick out their pajamas or what book they want to read at bedtime. This “gives them a sense of control while maintaining a firm and consistent routine,” she says. That said, you’ll want to curate the options for them. “Allowing a toddler to pick between two selected books rather than an entire bookshelf can save time and prevent them from feeling overwhelmed,” she adds.

When to Talk to Your Child’s Pediatrician

Most sleep regressions resolve on their own, but there are times when it’s wise to consult your child’s doctor. If your toddler snores loudly, gasps during sleep or seems to struggle to breathe at night, talk to your pediatrician right away. Persistent sleep disruptions lasting longer than six weeks are also worth discussing.

To Sum It Up

The 18-month-old sleep regression can feel overwhelming, but it’s a normal part of toddlerhood. “It’s important to remember, the 18-month sleep regression isn’t a setback—it’s your toddler practicing new skills and learning independence,” Brown says. Remember that this phase won’t last forever and soon you’ll both have better nights again.

Please note: The Bump and the materials and information it contains are not intended to, and do not constitute, medical or other health advice or diagnosis and should not be used as such. You should always consult with a qualified physician or health professional about your specific circumstances.