Why Doesn’t My 14 Month Old Sleep Through the Night?

At 14 months, frequent night waking is frustrating but remarkably common. Most toddlers this age need 11 to 14 hours of total sleep (including naps), and many still wake at least once or twice overnight. The reasons range from developmental milestones and teething to sleep habits that made perfect sense a few months ago but now work against longer stretches of sleep.

Separation Anxiety Peaks Around This Age

Separation anxiety is a normal developmental stage that typically begins between 6 and 12 months and can intensify well into the toddler years, usually fading by age 2 or 3. At 14 months, your toddler understands that you exist when you leave the room but doesn’t yet grasp that you’ll reliably come back. This makes nighttime especially hard. When they surface between sleep cycles (which happens naturally every 60 to 90 minutes), the realization that you’re not there can trigger full wakefulness, crying, and a strong desire to have you nearby before they’ll fall back asleep.

This isn’t a behavioral problem or a sign you’ve done something wrong. It’s evidence of healthy attachment. But it does mean nighttime separations feel genuinely distressing to your child right now, and that distress is enough to pull them fully awake at transitions they might otherwise sleep through.

First Molars Are Likely Coming In

The timing lines up almost perfectly with teething. First molars typically begin erupting between 13 and 19 months on top and 14 to 18 months on the bottom. These are large, flat teeth that have to push through a wide area of gum tissue, and they’re significantly more painful than the smaller front teeth your child already has. Difficulty sleeping is one of the recognized symptoms of teething, alongside drooling, irritability, and reluctance to eat.

Molar-related sleep disruption tends to come in waves rather than lasting continuously for weeks. You might notice a few rough nights, a break, then another stretch of waking. If your toddler is also chewing on things aggressively, drooling more than usual, or refusing certain foods, molars are a likely contributor.

How They Fall Asleep Matters More Than You’d Think

One of the biggest factors in whether a toddler sleeps through the night is what’s happening at the moment they fall asleep. If your child drifts off while being rocked, nursed, or held, they learn to associate those conditions with falling asleep. When they naturally wake between sleep cycles overnight, they need those same conditions recreated to get back to sleep. This is what sleep specialists call a “sleep onset association.”

Research tracking infants through their first year found that children who were placed in their cribs already asleep (rather than drowsy but awake) spent increasing amounts of time out of their cribs across the year and were less likely to develop the ability to resettle on their own. The strongest predictor of self-soothing by 12 months was whether the child slept in their own room, likely because brief, normal awakenings went unnoticed and the child had the opportunity to fall back asleep independently.

This doesn’t mean you need to stop all comfort at bedtime. But the goal is to separate soothing activities (rocking, singing, cuddling) from the actual moment of falling asleep. If your toddler can go into the crib drowsy but awake and drift off on their own, they’re far more likely to handle those middle-of-the-night wake-ups without needing you.

The Nap Transition Can Wreck Nights

Around 13 to 18 months, most toddlers shift from two naps to one. This transition is messy, and it frequently causes worse nighttime sleep before it causes better sleep. Signs your child is in this transition include regularly refusing or protesting one of their naps, taking a long time to fall asleep at naptime or bedtime, and experiencing more frequent night waking or early morning waking. You generally want to see these signs consistently for one to two weeks before dropping to a single nap.

During the transition, your toddler may be overtired on some days and undertired on others, both of which lead to fragmented nighttime sleep. An overtired toddler has elevated stress hormones that make it harder to fall asleep and stay asleep. An undertired toddler doesn’t have enough sleep pressure built up to sustain a full night. If your child recently dropped a nap or is fighting one of their two naps, this alone could explain the night waking.

Evening Light Suppresses Their Sleep Hormone

Young children are dramatically more sensitive to light in the evening than adults. Research on preschool-aged children found that even dim light (as low as 5 to 40 lux, roughly equivalent to a single lamp across the room) suppressed melatonin production by about 78% in the hour before bedtime. At typical indoor lighting levels of 60 to 150 lux, suppression jumped to around 86%. For context, a well-lit living room easily reaches 150 to 200 lux.

This means that normal household lighting in the hour before bed can substantially delay your toddler’s biological readiness for sleep. If bedtime is a battle and your child seems wired despite being tired, bright evening light could be pushing their internal clock later. Dimming lights throughout your home in the 30 to 60 minutes before bed, and avoiding screens entirely during that window, can make a real difference in how quickly and deeply your toddler falls asleep.

Your Bedtime Routine May Need Adjusting

A consistent bedtime routine is one of the most well-studied tools for improving toddler sleep. In a study of over 400 mothers of infants and toddlers with sleep problems, those assigned a 30-minute, three-step routine (bath, lotion or massage, then a quiet activity like reading or cuddling) saw significant improvements in how quickly their children fell asleep, how often they woke at night, and how consolidated their sleep was. The control group saw no change.

The key details: the routine should last no longer than 30 to 40 minutes, include two to four calming activities, and end before your child actually falls asleep. Activities that happen as the child is falling asleep (rocking, feeding, lying next to them) aren’t part of the routine; they become sleep onset associations that cause the overnight waking problem described above. No screens should be part of the wind-down. The routine works partly because it’s predictable: your toddler learns that this specific sequence of events means sleep is coming, which reduces anxiety and resistance.

Night Feeding at 14 Months

By 12 months, solid foods are becoming the primary source of nutrition, and growth slows compared to the first year. A healthy 14-month-old eating three meals and two to three snacks during the day generally does not need calories overnight. If your toddler is still waking to nurse or take a bottle, the feeding itself may have become a sleep association rather than a nutritional need.

That said, some toddlers genuinely eat less during the day due to teething pain, illness, or the normal fluctuations in appetite that come with this age. If your child has had a low-intake day, a night feeding may be filling a real gap. The pattern to watch for is consistent nightly feeding in a child who eats well during the day. In that case, the wake-up is more about the comfort of the routine than hunger.

When Night Waking Signals Something Medical

Most 14-month-olds who wake frequently are dealing with some combination of the developmental and behavioral factors above. But persistent, disruptive night waking can occasionally point to sleep-disordered breathing. In toddlers, this is most often caused by enlarged tonsils or adenoids that partially block the airway during sleep.

Signs to watch for include snoring (even soft snoring), pauses in breathing, mouth breathing during sleep, restless sleep with frequent position changes, and nighttime sweating. Importantly, infants and young children with obstructive sleep apnea don’t always snore. Sometimes the only sign is chronically disturbed sleep that doesn’t improve despite good sleep habits and a consistent routine. If your toddler breathes noisily during sleep or seems to sleep restlessly no matter what you try, it’s worth having their airway evaluated.