When your baby won’t stop crying at night, the most effective approach combines recreating womb-like sensations, taking turns with a partner, and ruling out other causes of distress. Colic peaks around 6 weeks of age and resolves on its own in 90% of infants by 3 to 4 months. That timeline feels impossibly long at 2 a.m., but knowing what works (and what doesn’t) can shorten the crying and protect your sanity in the meantime.
Why Colic Gets Worse at Night
Colic crying clusters in the late afternoon and evening, often stretching well into the night. Newborns are transitioning from the sleep-wake pattern they had in the womb to a mature circadian rhythm, and that transition is bumpy. During the first few months, waking every one to four hours overnight is physiologically normal, not a sign that something is wrong. For a colicky baby, each waking can trigger a fresh crying episode that’s harder to settle because both of you are already exhausted.
The formal definition of colic is crying or fussing for three or more hours a day, on three or more days a week, with no obvious medical cause. If your baby fits that pattern but is otherwise gaining weight, feeding well, and has no fever, you’re almost certainly dealing with colic rather than something more serious.
The Five Soothing Techniques That Work Best
Pediatricians often recommend a set of five calming strategies, sometimes called the 5 S’s: swaddling, side-lying (while held), shushing, swaying, and sucking. Each one mimics something your baby experienced in the womb, and they work best when layered together rather than tried one at a time.
- Swaddling: A snug wrap recreates the tight, warm feeling of the uterus. Use a thin blanket or a purpose-built swaddle sack. Keep the hips loose enough to move, and stop swaddling once your baby shows signs of rolling.
- Side or stomach position (held, not sleeping): Holding your baby on their side or stomach against your chest or forearm can calm them. This is only for soothing while you’re awake and alert. For actual sleep, always place your baby on their back.
- Shushing: A loud, sustained “shhhh” near your baby’s ear imitates the sound of blood rushing through the placenta. White noise machines or apps work the same way and let you keep it going without losing your voice.
- Swaying or swinging: Gentle, rhythmic motion, whether rocking in your arms, bouncing on a yoga ball, or walking around the room, mimics the movement your baby felt in the womb.
- Sucking: A pacifier gives your baby something to focus on and activates a calming reflex. If you’re breastfeeding and worried about confusion, most babies can handle a pacifier after the first few weeks.
Not every baby responds to the same combination. Some calm down with swaddling and white noise alone. Others need motion on top of everything else. Experiment, and when you find a combination that works, stick with it as your go-to nighttime routine.
Structuring the Night So You Can Survive It
If you have a partner, splitting the night into shifts is the single most protective thing you can do. One parent covers 8 p.m. to 1 a.m. while the other sleeps in a separate room (with earplugs if needed), then you swap. Even four to five hours of unbroken sleep changes how you cope with the next crying bout. If you’re parenting alone, ask a family member or friend to take one night shift per week. It matters more than you might think.
During your shift, keep the environment dim and boring. Bright lights and stimulation can make things worse. A dark room, white noise, and slow rocking tell your baby’s developing brain that nighttime is for calm. When the crying stops and your baby falls asleep, place them on their back on a firm, flat mattress with nothing else in the crib: no blankets, pillows, stuffed animals, or sleep positioners. Inclined sleepers and car seats are not safe sleep surfaces, even though a colicky baby might seem to settle more easily in them.
Have a “colic station” ready before nighttime. Set out a swaddle, pacifier, phone with a white noise app, a bottle if you’re formula feeding, and a water bottle for yourself. Fumbling around in the dark looking for supplies adds frustration to an already hard moment.
Feeding Changes That May Help
If your baby is formula-fed, switching to an extensively hydrolyzed formula (one where the milk proteins are broken into smaller pieces) can reduce crying by about an hour per day. In a double-blind trial, infants on hydrolyzed whey formula cried 63 fewer minutes daily compared to those on standard formula. Ask your pediatrician before switching, but this is one of the few dietary changes with solid evidence behind it.
If you’re breastfeeding, some babies improve when the nursing parent eliminates cow’s milk from their own diet for a trial period of two to three weeks. Dairy protein can pass through breast milk and irritate a sensitive infant gut. If there’s no change after three weeks, dairy likely isn’t the issue and you can add it back.
Gas drops containing simethicone are one of the most commonly purchased colic remedies, but multiple systematic reviews have found no benefit over placebo. Some studies actually showed slightly more crying episodes with simethicone compared to other approaches. National guidelines in the U.S., U.K., and Ireland all recommend against using it for colic. Save your money.
Probiotics: What the Evidence Shows
A specific probiotic strain, Lactobacillus reuteri DSM 17938, has the strongest evidence of any supplement for colic. In a meta-analysis, supplemented infants cried nearly 96 fewer minutes per day after one week compared to placebo. Infants taking this strain were roughly twice as likely to experience a meaningful reduction in crying. One study found a 75% drop in daily crying time over the course of treatment.
The catch: most of the positive data comes from breastfed infants. Results in formula-fed babies have been less consistent. The probiotic is available over the counter in drop form, but it’s worth discussing with your pediatrician first, especially if your baby was born premature or has immune issues.
Signs That It’s Not Just Colic
Colic is a diagnosis of exclusion, meaning it’s what’s left after ruling out other problems. A few red flags should prompt a call to your pediatrician rather than another round of swaddling and shushing:
- Fever: Any temperature of 100.4°F or higher in an infant under 3 months needs immediate medical evaluation.
- Blood in stool or vomit: This can signal a cow’s milk protein allergy or another gastrointestinal issue.
- Green (bilious) vomiting: This is different from normal spit-up and can indicate a bowel obstruction.
- Poor weight gain: If your baby isn’t following their growth curve, the crying may have a nutritional or metabolic cause.
- Abdominal swelling or tenderness: A distended belly that feels firm or causes pain when touched warrants a closer look.
- Lethargy or refusal to eat: A colicky baby cries intensely but is otherwise alert and feeds well between episodes. A baby who seems limp or uninterested in feeding is showing a different pattern.
Protecting Yourself During This Phase
Prolonged infant crying is one of the most common triggers for caregiver frustration, and research links it to increased risk of harmful responses when parents are sleep-deprived and unsupported. If you feel your frustration escalating, put your baby down in a safe place (their crib, on their back) and walk into another room for five minutes. A crying baby in a safe crib is in no danger. A baby being held by a parent at their breaking point is.
Colic is not caused by something you did wrong. It is not a reflection of your parenting. The crying has a developmental timeline, and 90% of babies are through it by four months. That fact doesn’t make tonight easier, but it means there is a finish line, and it’s closer than it feels right now.