Why is baby suddenly waking in the night

Babies' sleep patterns can be affected by many things, including illness, holidays or changes in routine. There are also developmental reasons why children who were great sleepers as babies often start waking during the night between six and 10 months.If your baby suddenly starts waking during the night, step back and evaluate the situation. First, is it something to do with the conditions in her room? Has the weather changed so your baby is too cold during the night? Have the neighbours started leaving on an outdoor light that is shining into your baby's bedroom? If so, try to fix the situation.
 Dress her more warmly or put up a black-out blind.Second, are the sudden night-time wakings following a period of illness or a holiday? Or do they coincide with a developmental change? If your baby has learned a new physical skill, for instance, learning to crawl, she may want to try it out every chance she gets, even in the middle of the night. Some babies get caught up in pulling themselves to standing, but then can't get themselves back down without help.The best way to deal with these sudden night-time wakings is to stick with what worked before. That is, don't suddenly change your bedtime routine or how you get your baby to sleep. Be consistent about what you do for several weeks. This will help your baby return to sleeping through the night once the temporary issue is resolved. If the problem persists, see our article on approaches to sleep problems.