DAS~Verbal Apraxia?

Damien's SLP stressed this week that she really thinks he has Verbal Apraxia. We discussed this before but now that he's nearing 2.5 yrs she wonders if that may be part of the problem. We played ball the other day here at the house and she would say "mine!" to have him roll the ball in which he would say "mamma!" then roll it. She'd say "me, my ball, mine!" and he would say "mamma!" and then roll the ball. When I think of it, she has to be right. I've told everyone for years everything is "dis" but I thought it was just the only word he could make but he's been making it ever since he was 10 months. It sounds like for now from her we just keep stimulating his mouth, do more aggressive ST, and praise him for whatever we can get new to come out of his mouth.