Self-soothing is a baby’s ability to calm down and fall asleep, or fall back to sleep, without a parent’s help. The term comes from sleep research, where it specifically describes those moments when a baby wakes between sleep cycles and returns to sleep on their own instead of crying for assistance. It’s a skill that develops gradually over the first year of life, not something babies are born knowing how to do.
How Self-Soothing Develops
Babies younger than three months rely on reflexive coping mechanisms like sucking and rooting. These are automatic responses, not deliberate strategies. During this stage, most infants fall asleep during or immediately after a feeding, and independent self-soothing is rare.
Between three and seven months, something shifts. Babies become more aware of themselves and their surroundings, and their internal motor and cognitive control increases. By about four months, they can deliberately shift their attention away from a source of distress and focus on something else. This ability to redirect attention is one of the earliest building blocks of emotional regulation.
The numbers tell a clear story of gradual progress. At one month, babies put themselves back to sleep after about 28% of their nighttime awakenings. By 12 months, that figure rises to roughly 46%. Self-soothing behaviors at sleep onset and after nighttime awakenings typically begin appearing between four and six months and increase steadily through the first birthday.
What It Looks Like During Sleep
All babies wake up during the night. Infants younger than 12 months typically rouse an average of three times per night as they transition between sleep cycles, which occur roughly every 90 minutes. This is completely normal and happens in adults too. The difference is what happens next.
Babies who self-soothe tend to wake briefly, perhaps shift position or make quiet sounds, and drift back to sleep without crying. Babies who haven’t developed this skill are more likely to cry and need a parent to help them resettle. Importantly, research shows that self-soothers wake just as often as other babies during the night. They simply handle those awakenings differently, often so quietly that parents never know they woke at all.
What Babies Actually Do to Self-Soothe
Self-soothing isn’t one single behavior. Babies use a range of strategies depending on their age and development:
- Sucking on fingers, thumbs, hands, or a pacifier is the most common and earliest form. Pacifier use and thumb-sucking also reduce the risk of SIDS in young infants.
- Shifting attention by turning their head, looking at something in the room, or focusing on a familiar object like a mobile.
- Repositioning by rolling, turning, or finding a comfortable spot.
- Holding a comfort object such as a stuffed animal or soft blanket (appropriate only after 12 months due to safe sleep guidelines).
As children get older, parents can encourage a transition away from sucking-based soothing. Thumb-sucking and pacifier use are helpful early on, but prolonged use beyond the toddler years can affect dental health and possibly speech development. Substituting a stuffed animal or soft doll can provide an alternative comfort source when the time is right.
Co-Regulation Comes First
One of the most important things to understand about self-soothing is that it doesn’t develop in isolation. Babies learn to regulate their emotions through a process called co-regulation, where a caregiver helps them feel safe, calm, and understood. You regulate with them before they learn to do it on their own.
This means that responding to your baby when they cry isn’t undermining self-soothing. It’s building the foundation for it. Babies don’t learn to calm down by being told or left to “figure it out.” They learn by repeatedly experiencing what calm feels like in the presence of a responsive caregiver, and over time, they internalize that ability. The goal isn’t to stop responding to your baby. It’s to gradually give them small opportunities to practice settling as they show signs of readiness.
Signs Your Baby May Be Ready
There’s no single milestone that flips a switch. Readiness is gradual, and every baby’s temperament plays a role. Temperament is biologically based, meaning some babies are naturally more reactive while others have a calmer baseline. Neither type is “better,” but they affect how quickly self-soothing develops.
Starting around three to six months, you can look for early signs. If you put your baby down drowsy but awake and they grizzle or fuss briefly before settling, that’s self-soothing in action. You can give them a minute or two to see if they settle on their own. If the fussing escalates to genuine crying, that’s a signal they still need your help, and it’s important to respond. Over time, those windows of quiet settling tend to get longer and more frequent.
Putting Baby Down Drowsy but Awake
The most commonly recommended strategy for encouraging self-soothing is to put your baby to bed when they’re sleepy but still have their eyes open. The idea is straightforward: if your baby always falls asleep while being rocked, held, or fed, they associate those conditions with sleep onset. When they wake between sleep cycles at 2 a.m. and those conditions are gone, they don’t know how to get back to sleep without recreating them.
The transition from awake to asleep takes about 10 minutes. If your baby practices that transition in their sleep space rather than in your arms, they’re more likely to be able to repeat it independently when they wake during the night. This doesn’t mean you leave a distressed baby alone. It means you give a calm, drowsy baby the chance to close that final gap on their own.
What About Stress and Cortisol?
Many parents worry that letting a baby fuss or cry causes harmful stress. The research on this is more nuanced than either side of the debate suggests. Studies measuring cortisol (the body’s primary stress hormone) during sleep interventions have produced mixed results. Some research found no elevated cortisol in babies during or after gentle sleep interventions. One study that measured cortisol at the actual moment of separation during an extinction-based approach (where parents leave the room entirely) did find elevated levels. But studies using more responsive methods, where parents actively settled babies before stepping back, showed no cortisol elevation.
One consistent finding stands out: babies whose mothers were more emotionally responsive at bedtime had lower cortisol levels at nine months. This reinforces the idea that self-soothing develops best within a warm, responsive relationship, not as a replacement for one. The approach matters. A gradual, responsive process where you comfort your baby and slowly give them more space is fundamentally different from leaving a young baby to cry without support.
Temperament Makes a Difference
Some babies pick up self-soothing quickly. Others take much longer, and that’s largely a matter of temperament. Researchers describe infant temperament along three main dimensions: how easily a baby becomes upset (negative affectivity), how active and eager they are (surgency), and how well they regulate their responses. These traits are rooted in genetics and neurobiology, not parenting.
A baby with high negative affectivity may cry more intensely and take longer to calm down, making self-soothing harder to develop on an early timeline. A baby with strong natural regulation may settle easily from the start. Understanding your baby’s temperament can help you set realistic expectations and avoid blaming yourself if progress feels slow. The skill develops, but the timeline varies widely from one baby to the next.