How many hours per day does a 2 yo child should sleep? what should i do if my child is very difficult to sleep?

14-16 hours:24 hours: Usually 10-12 hours/night & 1-3 hours/day. Limit daytime naps to 2 hours. Play with her a lot during the day. At a regular bedtime, bathe her, brush her teeth, read to her & put her in her crib in her own room when she's drowsy, but awake to learn to self-calm to sleep. Ignore her protests consistently as they worsen before they stop. See references on toddler nutrition & sleep in comments.