Child Not Sleeping and Crying at Night: Causes, Step-by-Step Plan, and Age-by-Age Fixes

Child Not Sleeping and Crying at Night: Common Causes, a Step-by-Step Plan, and Age-by-Age Fixes

When a baby or child won’t sleep and cries at night, it’s exhausting and confusing. The good news is that most night waking has a pattern, and patterns can be changed with a clear plan.

This guide focuses on one specific problem: frequent night waking with crying. You’ll learn the most common causes, what to do first, and how to troubleshoot by age.

If you also want a big-picture view of how much sleep is typical at different ages, see this guide: How much sleep do babies need? Healthy sleep habits and happy baby sleep schedule and guide.

Why kids wake up crying: the most common causes

Night crying usually falls into one (or more) of these buckets:

• Sleep association needs (they fall asleep one way and need the same thing to return to sleep).
• Overtiredness (too-long wake windows, late bedtime, skipped/short naps).
• Discomfort (hunger, teething, gas/constipation, reflux symptoms, fever/illness, itchy skin, a wet diaper, room too hot/cold).
• Sleep environment disruptions (noise, light, screen exposure near bedtime).
• Separation anxiety or worries (common in toddlers/preschoolers; can show up as bedtime battles and night wakings).
• Nightmares or night terrors (different problems with different responses).
• Breathing issues during sleep (snoring, mouth breathing, pauses in breathing).

Many parents get stuck because they treat every wake-up the same. A better approach is to identify the type of wake-up and respond consistently.

First, rule out “fixable” basics (tonight)

1. Check for illness or pain. Fever, ear pain, a bad cough, new rash, or significant teething discomfort can cause sudden night crying.
2. Confirm a comfortable sleep setup. Dark room, steady white noise if helpful, and comfortable temperature. A cool, comfortable room is often easier for sleep than a warm one.
3. Review evening food and fluids. Hunger can trigger wakings (especially infants), while lots of fluids right before bed can trigger bathroom wakes in older toddlers and kids.
4. Remove stimulating inputs. Bright screens and exciting play close to bedtime often worsen night wakings.

A step-by-step plan to reduce night waking and crying (10–14 days)

Step 1: Track patterns for 3 nights

Write down bedtime, how your child fell asleep, wake times, how long they cried, and what helped. Patterns usually show up fast, such as wakings at the same times each night or wakings that happen soon after a very late bedtime.

Step 2: Lock in a predictable bedtime routine

A simple routine (20–30 minutes) helps cue the brain for sleep:

• Bath or wipe-down, pajamas, brush teeth
• Dim lights and calm play or books
• Cuddle, song/prayer, short goodnight phrase
• Into bed drowsy (or calm) at about the same time nightly

Need options for older toddlers and preschoolers? See How to put your 1,2,3,4,5-year-old baby to sleep: methods, tips, advice and recommendations.

Step 3: Fix overtiredness (the fastest win)

If your child fights bedtime, takes a long time to fall asleep, or wakes crying early, overtiredness may be the trigger. For 1–2 weeks:

• Move bedtime earlier by 15–30 minutes.
• Protect naps (age-appropriate and consistent).
• Avoid long late naps that push bedtime too far back.

Step 4: Choose a response plan and stick to it

Pick a plan that matches your child’s age and temperament, and be consistent for at least a week.

• For babies: use brief, calm checks, feed if truly hungry/age-appropriate, and avoid creating new “extras” at 2 a.m. that you can’t repeat later.
• For toddlers/preschoolers: keep visits boring and short; return them to bed with the same phrase each time.
• For older kids: address worries during the day, not at midnight; keep a simple script overnight and walk them back to bed.

If you want a quick set of practical tweaks that often improve sleep within days, see What can help my baby sleep through the night? Top 10 tips.

Step 5: Troubleshoot the “hard” wake-ups

Use the type of crying to guide your response:

• Nightmares: your child wakes fully, seeks comfort, and can describe fear. Comfort briefly, reassure, keep lights low, and help them settle back to sleep.
• Night terrors: your child looks terrified but seems “not awake,” may scream, sweat, or thrash, and is hard to comfort. Keep them safe, keep the room quiet, don’t try to fully wake them, and wait it out. The next day they usually don’t remember.

If bedtime screaming and frequent night wakings continue into the preschool/early school years, this related guide may help: 3–7 Year Old Sleep Problems: Bedtime Screaming & Night Wakings.

Age-by-age troubleshooting

Babies (0–6 months)

• Most common causes: hunger, day/night confusion, reflux symptoms, illness, overtiredness, and difficulty linking sleep cycles.
• Try: a consistent bedtime routine, appropriate feeding, daytime light exposure and nighttime darkness, and calming resettling (pause briefly before intervening to see if baby self-settles).
• Watch for: poor weight gain, trouble feeding, persistent vomiting, fever, or breathing difficulties.

Babies (6–12 months)

• Most common causes: sleep associations, separation anxiety, teething discomfort, travel/illness setbacks, and a too-late bedtime.
• Try: put baby down awake (or mostly awake), keep your response consistent, and adjust nap timing to prevent overtiredness.

Toddlers (1–3 years)

• Most common causes: boundary testing, separation anxiety, nap changes, nightmares, and overstimulation before bed.
• Try: clear bedtime rules, a visual routine, choices with limits (“two books”), and a boring, repeatable return-to-bed response.
• Helpful add-on: a comfort object (if age-appropriate) and a dim nightlight if fear of the dark is emerging.

Preschoolers (3–5 years)

• Most common causes: fears, nightmares, inconsistent bedtime, late naps, and big daytime changes (new school, new sibling).
• Try: “worry time” earlier in the day, calm connection at bedtime, and consistent follow-through overnight.
• Script: “You’re safe. It’s time to sleep. I’ll check on you in the morning.”

School-age kids (6+ years)

• Most common causes: stress/anxiety, busy schedules, screens late at night, and irregular sleep timing.
• Try: a consistent lights-out time, screen-free wind-down, and problem-solving worries during the day.

When to seek professional help

Consider calling your child’s pediatrician or a qualified clinician if you notice any of the following:

• Breathing concerns during sleep: loud snoring, gasping, pauses in breathing, or persistent mouth breathing.
• Safety concerns: sleepwalking that leads to unsafe wandering, or intense episodes where your child could hurt themselves.
• Persistent severe sleep disruption that lasts more than 2–3 weeks despite consistent routine and response.
• Medical red flags: fever in a young infant, dehydration, repeated vomiting, significant feeding trouble, or suspected pain you can’t explain.
• Daytime impact: extreme sleepiness, behavior changes, or school impairment tied to poor sleep.

For reliable sleep guidance, many families start with the American Academy of Pediatrics and the CDC resources on children’s health and development.

With night crying, progress usually looks like fewer wake-ups, shorter crying, and faster resettling. Stick with one clear plan, adjust bedtime if overtiredness is likely, and reach out for medical guidance when symptoms suggest a health or breathing issue.