For newborns and young infants, you should respond quickly to their cries to build trust and ensure their needs are met; letting them cry for long periods is not recommended. For older babies (typically 4-6 months and older) where sleep training might be considered, a short, controlled period of crying (e.g., 10 to 15 minutes) may be used, but parents should always use their judgment and consult with a pediatrician.
Many parents begin to pause before responding, or allow children to cry during bedtime without running to their sides around this age to teach children to sleep on their own. Even using this method, many suggest that babies should not be allowed to cry for more than 10 minutes without your attention.
After 3 hours, contact your doctor. Crying nonstop for too long likely means there's something wrong. If no amount of soothing seems to work and they aren't crying it out, your doctor can provide guidance.
The recommended age for letting a baby cry it out is 5 - 6 months or older. Since younger babies aren't always capable of consistently falling asleep independently, we recommend waiting until your baby is at least 5 months old before using a cry it out method at bedtime.
There is typically no limit to CIO. Unfortunately if you rescued your baby at 2 hours of crying before, they might cry for much longer than that. We made the mistake of thinking something was wrong after my 8 month old cried for 20 minutes (so unlike her), so we helped her. The next time it was 30 minutes, then 45.
The 5-3-3 rule is a baby sleep training method for night weaning and fostering independent sleep, involving a baby sleeping 5 hours, staying awake for 3 (for a feed if needed), then sleeping another 3 hours, and continuing in 3-hour increments, teaching them to self-soothe after the initial long stretch, though it's a flexible guideline, not strict; it aims to create longer stretches for parents while meeting the baby's needs, often used around 4-6 months.
But it's important to note up front: The cry-it-out method has not been found to be harmful to babies. “There is no evidence to show that children have any social-emotional issues or resentment toward their parents later in life for letting them cry for a few minutes at nighttime,” Dr. Schwartz reassures.
Babies start in 'active sleep' (with faster, uneven breathing) and move into a deeper sleep after about 20 minutes. That's a good time to transfer them into their sleeping place. Many babies don't like being put down into a cot.
SIDS is less common after 8 months of age, but parents and caregivers should continue to follow safe sleep practices to reduce the risk of SIDS and other sleep-related causes of infant death until baby's first birthday. More than 90% of all SIDS deaths occur before 6 months of age.
Separation anxiety, on the other hand, can cause much longer phases of clinginess. According to the AAP, many children begin having some feelings of separation anxiety around the time they're 8 months old, with the phase peaking between 10 and 18 months and mostly resolving by the time a child turns 2.
What are the symptoms?
A 2017 study confirms what many parents already instinctively know: You should pick up babies every time they cry. The research from the University of Notre Dame found that it was impossible to spoil an infant by holding or cuddling him, according to an article at News.co.au.
The 3-2-1 sleep rule is a simple wind-down routine: stop eating and drinking alcohol 3 hours before bed, stop working/mentally stimulating activities 2 hours before, and turn off screens (phones, TVs) 1 hour before sleep, helping you transition to rest by reducing stimulants and preparing your mind and body. It's often part of a larger 10-3-2-1-0 rule, which also adds no caffeine 10 hours prior and no hitting snooze (0) in the morning.
The 5-3-3 rule is a loose guideline for structuring a baby's sleep schedule: 5 hours of wake time before the first nap, 3 hours of wake time before the second nap, and 3 hours before bedtime.
Crying can last 30 to 40 minutes or longer. Even otherwise healthy infants may spend up to 4 or 5 hours a day crying. Sometimes your baby may need to cry to relieve stress. If you've checked all the usual suspects—diaper, hunger, comfort—it's OK to let them cry.
The peak incidence of SIDS occurs between 1 – 4 months of age; 90% of cases occur before 6 months of age. Babies continue to be at risk for SIDS up to 12 months.
However, it can happen wherever your baby is sleeping, such as when in a pushchair or even in your arms. It can also happen sometimes when your baby isn't sleeping – some babies have died in the middle of a feed.
SIDS is the sudden and unexplained death of an infant between the ages of 1 month and 1 year old that doesn't have a known cause, even after a complete investigation.
The hardest week with a newborn is often considered the first six weeks, especially weeks 2-3, due to extreme sleep deprivation, constant feeding demands, learning baby's cues, postpartum recovery, and a peak in inconsolable crying (the "witching hour"), making parents feel overwhelmed as they adjust to a new, exhausting routine. While the first week is tough, the challenges often intensify as the baby becomes more alert but still fussy, with major developmental hurdles like cluster feeding and increased fussiness peaking around 6-8 weeks.
The 40-day rule after birth, often called confinement or "The Golden Month," is a widespread cultural tradition emphasizing a mother's deep rest, healing, and bonding with her newborn, with family often handling chores and visitors, promoting physical recovery (like stopping bleeding) and mental well-being, rooted in ancient practices from Asia, Latin America, and religious traditions like Judaism and Christianity. Key aspects involve nourishing the mother, sheltering her from stress, and focusing solely on resting and bonding, a stark contrast to Western pressures to "bounce back" quickly.
Conclusion. In sum, we found that excessive infant crying as perceived by their mothers, in term born babies, doubles the risk for children's overall problem behavior, conduct problems, hyperactivity, and mood problems at the age of 5–6.
A study by Gradisar et al. (2016) also conclude that cry it out-sleep training does not harm attachment. In this study, use has been made of objective measurements of attachment. The study found no difference in association between the intervention group and the control group one year after the intervention.
This approach to sleep training is considered one of the gentler ones, as many parents believe it teaches babies to self-soothe without feeling like they're leaving them alone in their cribs. "We do the pick up/put down method," says What to Expect Community user Szmama. "It works well for us.