#asktheexpert Hello Doctor My Daughter is 21 month, and her sliping pattern has changed completely since 1 week before she sleeps all night, now she sleeps at 9-12 pm and wake-up at 1-2 Am in night and again sleeps at 4-6.30am, what ever we do, even we take a walk or ride at 12 am also nothing happened, simply she wake-up at 3am and sleeps at 6.30am, for that my sleep is got affected too much, I got very less time to sleep 2-3 hours only, I became now tired whole day, please suggest..