Every child is different and also depends how you handle it, let nature take its course. Your child has its own unique personality. I remember my twos sleeping habbits changing, sometimes worse but eventually better. Alex went through a phase of not wanting to go to sleep when I did at night so he was spinning around in the bed playing , then he would be ok the next week. Different growth patterns change things. Its not like they will never sleep because they go through a phase of bouncing about, its when you start controlling they start resisting eventually. To tiring to go down that path.My children go to sleep without being told they have to, bit of reverse psychology I have done lol I say when William dosnt want to go to bed, fine. Then he realizes he gets tired and now asks me to take him to bed or just goes. I dont get bed time fights.