I think your son sounds normal. we have had sucess with sign language, not so much with pecs. My son doesnt speak, but can answer questions with words (unprompted) that being said he still pulls us by the arm alot. we are thrilled that he has any words, so try to keep it in perspective. no offense, but I think the gf/cf diet is silly. some children start to speak as late as 8 Ive heard so dont give up hope!