DS has been in a bed for about a month with a stair gate across his door. Every night he'll happily go to bed and have a story at 7-7:30 but then he has to be put back to bed several times before he crashes out at around 9. I know this is far too late but I don't know how to get him to fall asleep earlier. He sleeps until 7-8 and has a long nap in the day. It wouldn't bother me too much but DD will be sharing a room with him in a few months (she's 3 months atm) and I don't want him to disturb her. I posted something similar a while ago but I thought it was the novelty of the whole thing, figured it would've worn off by now. Any suggestions?