A friend of mines little boy was slow to start talking too, and then one day almost over night when he was nearly three he just went from hardly talking to hardly shutting up!! lol She was a little bit worried too, as my son who was younger, had a bigger vocab than her son at the time. She said she was close to looking into booking appts and getting things checked, but held off as he showed no other signs of being behind in any other ways, he could hear, he could understand things, he just wasnt ready to be talking so much. She did say it was a releif once he did start talking alot more!

I think some kids just take their time with things. But if your really worried about any other aspects of his development, then maybe its worth looking into som eappts, even if its turns out you dont need them and you can cancel them later on!!