I know it is not conventional, but do you know about sign language? I have a very active baby, so there was a time I was worry myself. Then I teach my baby sign language, buy the dvd : signing time. He loves it, he communicate better now. I heard that fish oil (DHA) supplement helps too. Read some review in amazon about children's fish oil, it helps with speech delay and ADHD. I know it is hard, but arm yourself with lots of information (but be careful with pseudo-science), then you can make better choices.