AM -
I hope that you can look into Montessori. When my son was 2.5 we pulled him out of an "academic" preschool/day care and put him in a Montessori. It has worked out really well the last year and a half.
The preschool/day care didn't get him. I would say, "he is having conversations with adults and his classmates don't use full sentences yet." They wouldn't put him with the threes because he wasn't potty trained. bah!
At the Montessori his best friends are the kids 6 -18 months older. He is thriving there being as verbal as he wants to be, going at his own pace.
good luck!
- EW
