Do you have blackout curtains so that it is very dark? Can't you put him in a room by himself so he doesn't bother the others?

My system works but it isn't for everyone. I have all the children in the same room and I stay in the room with them until they all fall asleep, then I leave the room so I don't bother them. I've been so lucky to have good sleepers (1 1/2-2hrs) for over 5 years, but since I'm in the room with them they know they are not to stand up or make any noises.

I shush them if they talk and tell them no talking. If I have a newish one that jumps up I lay them down and tell them sternly that at naptime we lay down and rest. But if you stick to routine and lay them down at the same time every day they will fall asleep. Their bodies are conditioned to the routine and know what to expect next. I've never had more than 1/2 an hour difference between the first one falling asleep and the last one falling asleep. Of course, when I'm training a new baby about naptime I'll do that in another room until they are sleeping at the same time as the others, then they are all together again.

It's true that some children outgrow their naps at young ages, but they can still be taught to lay still and rest because that's the rule for naptime.