My 18mo daughter is not able to sleep properly from past 1 week . She is having a new sleeping pattern daily. At night time she slept in a go just once rest of the time it was 3-4 hours sleep then 2 hour awake then sleeping again for 3-4 hours. She sleeps 1-2 hours at daytime as wel. Pls suggest some helpful routines or food habits which should be followed to make her sleep better.