Help Please

by Kathy

My grandson, Sean, is going on 4 years old and has been attending the 3-5 programs for children. He is not autistic, but he has a limited vocabulary, and I believe he is an apraxia child. He speaks - but his own language - which we do not understand. He can say yes, no, all right (which comes out o righ), please (which comes out eese), go (which comes out dough), mama, dada. His SLP refuses to diagnose him apraxic, she says he does say some words and that means he has the ability. Is there anyone or anywhere that we can take Sean for an indepth work up. He has been in school for a year now. He does say a few more words, but the approach at the school is "Keep talking to him and eventually he'll talk back!" I told my daughter a year and a half ago that I believed Sean to be apraxic. Help, where do we go from here? He has been to UCONN for autistic testing, had hearing tests done, etc. No one seems to be able to tell us what is wrong with him.