Fruitloop, are there other issues? Something tells me there probably are other small things happening that are getting on your nerves. To answer your question though, I would put in the time at the child's bedside and keep working on the child to be quiet for his friends, even if it took a month or two.

I've put in that much time getting a child to learn to go to sleep when it's naptime. Once I get them into our routine I don't have much trouble but the first few months when they think they are the boss they are learning that it's my way at daycare and everyone follows the same routine. After all, these children are usually the centre of the universe at home but have to learn that they are one of a group at daycare. Harsh I know, but a necessary thing we all have to learn as children.

I have a child who sleeps 1 1/2 hours a lot of days but the others all sleep 2-2 1/2 hours so he's learning that he has to be quiet until all his friends wake up. I put a book and a cuddle at his feet after he falls asleep so he has something to do when he wakes up. It's working well most days.