So usually I get my son ready for bed around 7-7:30 and for awhile now he doesn't even go down till…

So usually I get my son ready for bed around 7-7:30 and for awhile now he doesn't even go down till 9-11 he fights it and he'll fall asleep but I put him down and he's up in 5 mins like 3 times or he's just wide awake. So should I change his time till like 8-9? I just don't want it to be later and then he takes just as long to get down making it like midnight by the time he gets to really sleep...