My DS (now 3.3) has been at nursery varying amounts depending on the situation: at 10m started off 3x week, then quite awhile later up to 4x, then up to 5x briefly. He now goes 2x week. He developed some really nice friendships with a few boys when he was in the 2-3 room. He'd mention them by name, talk about what they'd been doing together and when I went to collect him I'd see him playing with them.
The boys were mostly about 6m older and when they moved to the next room, he never quite recaptured that again even once he moved up to the 3+ room. He still seems happy enough (doesn't complain about going but nor does he say yay) but he rarely mention specific boys' names and it makes me a bit sad, especially given that he once did. He's only in now two days a week because I'm home now with DD but I wonder if I should put him in at least 3 just so he can make more friends. This is all in central London so most of the kids are there pretty full time I think -- he's the exception.
So should I put him in for another day? I don't know if this is an age thing, got to do with the children there (most of the original set are no longer there), or to do with the fact that he's not there very much now. I like having him at home but I'd be happy to put him in another day if I felt like that was the best thing for him.