Does every child doesn't have enough hours of nap will cry at night? My LO15mo from 7mo onwards every day when she fall asleep she wld suddenly woke up crying & screaming, so we suspect she didn't had enough napping time (light sleeper). Until now she wld still woke up crying & uncontrollable certain days.

I ever read that it will be hard for your baby to sleep well at night if he isn't napping well during the day; the more exhuasted they are, the more difficult they can get into good sleep. And in fact, many people around me believe it, including myself. Ever since my LO is birth till now 3YO and 5YO; they had been napping like 2-3hrs daily. They dont have any problem to sleep through and hardly wake up by nightmares. Playing some smoothing music might help.