{"id":16021,"date":"2026-05-17T07:00:00","date_gmt":"2026-05-17T07:00:00","guid":{"rendered":"https:\/\/petitmaxou.com\/?p=16021"},"modified":"2026-08-07T17:47:34","modified_gmt":"2026-08-07T16:47:34","slug":"baby-sleep-complete-guide","status":"publish","type":"post","link":"https:\/\/petitmaxou.com\/en\/blog\/sommeil-bebe-guide-complet\/","title":{"rendered":"Baby sleep: how to help them sleep well from 0 to 12 months?"},"content":{"rendered":"<p>The <strong>baby sleep<\/strong> is one of the major concerns for new parents \u2014 and often the primary source of exhaustion. At what age does a baby sleep through the night? How do you establish good habits? What should you do about night waking? This comprehensive guide on the <strong>baby sleep<\/strong> answers all your questions, month by month. \ud83c\udf19<\/p>\n<h2>\ud83e\udde0 How does baby's sleep work?<\/h2>\n<p>The <strong>baby sleep<\/strong> is fundamentally different from adult sleep. A baby has shorter sleep cycles (45-50 minutes compared to 90 minutes for an adult), with a much greater proportion of active sleep (the equivalent of REM sleep). This active sleep is essential for their neurological development \u2014 never interrupt it.<\/p>\n<p>What this means in practice: baby wakes up naturally between cycles. Their ability to fall back asleep on their own \u2013 what specialists call 'self-soothing\u00bb \u2013 develops gradually, often between 3 and 6 months. Before then, waking up is normal and doesn't mean anything is wrong.<\/p>\n<h2>\ud83d\udcc5 Baby sleep month by month<\/h2>\n<h3>0 to 3 months: chaos (normal)<\/h3>\n<p>A newborn sleeps 16 to 20 hours a day in small stretches of 2 to 4 hours, with no day\/night distinction. Their biological clock is not yet programmed. Waking up every 2 to 3 hours at night is normal and necessary \u2014 the baby needs to feed frequently. No routine is possible before 6 to 8 weeks.<\/p>\n<h3>3 to 6 months: the first regularities<\/h3>\n<p>The day\/night rhythm is starting to settle in. Baby sleeps 14 to 16 hours, with longer periods of night-time sleep (sometimes 4-6 consecutive hours). This is a good time to start a simple evening routine. The first naps are beginning to stabilise (morning, midday, late afternoon).<\/p>\n<h3>6 to 9 months: the 6-month regression<\/h3>\n<p>Paradoxically, the <strong>baby sleep<\/strong> can deteriorate at 6 months even though it was improving. This is the \u00ab6-month regression\u00bb \u2014 linked to a major developmental leap (motor skills, cognition). It lasts 2 to 6 weeks and resolves on its own. Maintain the routine, stay the course.<\/p>\n<h3>9 to 12 months: towards sleeping through the night<\/h3>\n<p>Many babies (not all) sleep through the night by 9-12 months. 2 naps a day (morning and lunchtime). Total sleep: 13-15 hours. The 9-month sleep regression (linked to separation anxiety and motor development) can temporarily disrupt established habits.<\/p>\n<h2>\ud83c\udf19 Bedtime routine: the key to baby's sleep<\/h2>\n<p>The evening routine is the most effective tool for improving the <strong>baby sleep<\/strong>. It signals to baby that night is coming and prepares their brain for sleep. A good routine:<\/p>\n<ul>\n<li>Start at the same time each evening (ideally between 7 pm and 8:30 pm)<\/li>\n<li>Takes 20 to 40 minutes<\/li>\n<li>Always takes place in the same order<\/li>\n<li>Ends in the nursery<\/li>\n<\/ul>\n<p>Example of an effective routine: a lukewarm bath \u2192 massage \u2192 pyjamas \u2192 breastfeeding or bottle feed \u2192 a song or story \u2192 comfort toy \u2192 off to bed.<\/p>\n<h3>The nightlight: an ally of the routine<\/h3>\n<p>Soft lighting during the evening routine (and turned off or very dim for the night) signals to baby the transition to sleep. Choose a nightlight with a warm light (amber or orange) that does not disrupt melatonin \u2014 no blue or white light for the evening.<\/p>\n<p>\u2192 <a href=\"https:\/\/petitmaxou.com\/en\/product-category\/bedroom\/nightlight\/\">View PetitMaxou baby night lights<\/a><\/p>\n<h2>\ud83d\udecf\ufe0f Safe sleeping for babies<\/h2>\n<p>Sudden infant death syndrome (SIDS) is the leading cause of mortality between 1 and 12 months. Official recommendations for a <strong>safe baby sleep<\/strong> :<\/p>\n<ul>\n<li><strong>On the back<\/strong> - always, until baby rolls over by themselves<\/li>\n<li><strong>Bed in the master bedroom<\/strong> \u2014 ideally up to 6 months<\/li>\n<li><strong>Firm surface<\/strong> \u2014 suitable mattress, without topper or cushion<\/li>\n<li><strong>No toys in the bed<\/strong> \u2014 no cot bumper, no soft toy, and no blanket before 12 months<\/li>\n<li><strong>Sleeping bag<\/strong> instead of blankets \u2014 suitable for the room temperature<\/li>\n<li><strong>Bedroom temperature<\/strong> 18-20\u00b0C<\/li>\n<li><strong>No smoking<\/strong> in baby's environment<\/li>\n<\/ul>\n<h2>\ud83d\ude34 Helping baby to fall asleep on their own<\/h2>\n<p>Self-soothing develops naturally \u2014 you cannot force it before a baby's brain is ready (generally, not before 4-6 months). A few approaches:<\/p>\n<h3>The progressive method (modified Ferber method)<\/h3>\n<p>Put baby down drowsy but awake. If they cry, wait a few minutes before intervening, then gradually increase the interval. Reassure without picking them up. Controversial but effective for some babies from 6 months onwards.<\/p>\n<h3>The \u00abno cry\u00bb method (Harvey Karp, Elizabeth Pantley)<\/h3>\n<p>Gradually reduce sleep associations (breast, bottle, arms) by replacing them with other routines. Slower but tear-free. Suitable for families who do not want to let their child cry.<\/p>\n<h3>Safe co-sleeping<\/h3>\n<p>Sharing the parental bed while following strict safety rules (no alcohol, no medication, firm surface, no thick duvet). Makes night-time breastfeeding easier. Not recommended before 3 months and for premature babies.<\/p>\n<h2>\ud83d\udd04 Sleep regressions: what you need to know<\/h2>\n<p>Sleep regressions are periods when the <strong>baby sleep<\/strong> \u2014 which was improving \u2014 suddenly deteriorates. They systematically correspond to a developmental leap:<\/p>\n<ul>\n<li><strong>4 months<\/strong> restructuring of sleep cycles (the most difficult)<\/li>\n<li><strong>6 months<\/strong> motor and cognitive leap<\/li>\n<li><strong>9 months<\/strong> separation anxiety<\/li>\n<li><strong>12 months<\/strong> walking and language<\/li>\n<li><strong>18 months<\/strong> vocabulary explosion<\/li>\n<\/ul>\n<p>Sleep regressions last for 2 to 6 weeks. The most effective strategy: maintain the routine, increase daytime cuddles, and wait it out.<\/p>\n<h2>\u2753 FAQ \u2014 Baby sleep<\/h2>\n<h3>At what age does a baby sleep through the night?<\/h3>\n<p>The medical definition of \u00absleeping through the night\u00bb is 5-6 consecutive hours of sleep. Some babies manage this by 3-4 months, while others do not until 12-18 months. The average is around 6-9 months. There is no universal \u00abnormal\u00bb age \u2014 it all depends on the baby, feeding and temperament.<\/p>\n<h3>My baby only sleeps in my arms \u2013 how do I change that?<\/h3>\n<p>This is a classic sleep association. To change it gradually: start by putting baby down asleep in the cot, then drowsy, then increasingly awake over several weeks. Go at your own pace \u2014 there is no rush to change an association that works if you are comfortable with it.<\/p>\n<h3>Does a dummy help a baby sleep?<\/h3>\n<p>Yes \u2014 sucking is soothing, and a dummy is even recommended to reduce the risk of SIDS. If baby falls asleep with the dummy and wakes up when it falls out, you can put several in the cot around 6-8 months so they can find one on their own.<\/p>\n<h3>Does a baby need to sleep in complete darkness?<\/h3>\n<p>For daytime naps, darkness makes sleep easier but is not essential. For the night, complete darkness (or a very dim amber nightlight) is ideal to encourage melatonin production. Avoid white or blue nightlights, which disrupt falling asleep.<\/p>\n<h2>\ud83d\udecd\ufe0f Create a sleep-friendly environment at PetitMaxou<\/h2>\n<p>Gentle night lights, cot accessories, safe doudous: PetitMaxou offers everything you need to help your baby sleep soundly. Free delivery throughout the EU, returns within 14 days.<\/p>\n<p><a href=\"https:\/\/petitmaxou.com\/en\/product-category\/bedroom\/\">\u2192 See the PetitMaxou nursery<\/a><\/p>\n<p><strong>Also to read on the blog:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/petitmaxou.com\/en\/blog\/how-to-choose-comfort-toy-baby\/\">How do you choose the perfect comfort toy for your baby?<\/a><\/li>\n<li><a href=\"https:\/\/petitmaxou.com\/en\/blog\/personalised-baby-night-light-the-birth-gift-that-lasts-all-through-childhood\/\">Personalised baby night light: the newborn gift that lasts<\/a><\/li>\n<li><a href=\"https:\/\/petitmaxou.com\/en\/blog\/3-month-old-baby-developmental-toy\/\">3-month-old baby sensory toy: our selection<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Le sommeil de b\u00e9b\u00e9 est l&rsquo;une des pr\u00e9occupations majeures des nouveaux parents \u2014 et souvent la premi\u00e8re source d&rsquo;\u00e9puisement. \u00c0 quel \u00e2ge b\u00e9b\u00e9 fait-il ses nuits ? Comment instaurer de bonnes habitudes ? Que faire face aux r\u00e9veils nocturnes ? Ce guide complet sur le sommeil b\u00e9b\u00e9 r\u00e9pond \u00e0 toutes vos questions, mois par mois. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":16020,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[228],"tags":[],"class_list":["post-16021","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conseils"],"acf":[],"_links":{"self":[{"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/posts\/16021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/comments?post=16021"}],"version-history":[{"count":0,"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/posts\/16021\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/media\/16020"}],"wp:attachment":[{"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/media?parent=16021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/categories?post=16021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/petitmaxou.com\/en\/wp-json\/wp\/v2\/tags?post=16021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}