L.P.
My son was completely potty trained at 2 and 3 months. He also just got it. I did have a seperate potty for him that he would use wherever he was, like in front of the tv, in his room, etc. Then when he was completely used to that, we got a seat that fits on the regular toilet which he still uses when he goes poop. Anyway...if I were you I'd go for it if he has some understanding of what's going on. The sooner they're out of diapers, the better. I have to say though, my son wasn't out of pull ups at night until about 3 and a few months. It took us a while for that was mostly my fault for giving him too much to drink too late. Once we cracked down on it he got it very quickly.
Good luck.