Hi J., first of all let me say way to go and good job on him being potty trained. You said he is your first, so i am going to assume he has a little brother or sister. sometimes the older child see's the attention the younger one is getting and they want the same attention, I have a 4 year old in my daycare who has a 7 month old brother, everytimes we tickle him or do something to make him laugh she says do that to me, and she is a very smart and independent 4 year old. She ever calls herself a baby, but sometimes wants the same treatment as her brother. I think it's good you don't give into that behavior, I would just ignore it when he calls himself a baby and continue to treat him like a big boy. You don't need to slow down as one parent said, 2 is young but it's not infancy 2 is in the toddler stage and I think it's great that you treat him that way, one more said call him a baby, no don't, i call my 26, 23, and 21 babe, but it's a term of indearment not treating a non infant like an infant. J.