W.I.
I have always had my kids on a schedule. It started around around 2 months old. They were in bed by 8pm. My six year old is still in that same schedule. I noticed that if they go to bed any later they dont sleep as well. They'll fall asleep but then are up again through out the night. Try doing a schedule. Also try making it earlier so he wont get used to going to sleep that late. That way you wont have to struggle with him when he gets older to go to bed ealier. I have also noticed a warm bath and bottle/breastfeeding before bed helps make them sleepier. Hope this helps!! Good luck!