We're working on combining Please with other signs, so that it's actually a request. Right now he signs Please whenever he wants ANYTHING, but without a sign to tell you for what he is saying Please. So we're working on Eat Please, Drink Please, Read Please. His current method of saying that he wants to read a book is to throw it in my lap while signing Please, and if I'm in the middle of something he starts commanding, loudly, "MMMM! MMMM!" and if that doesn't work, will start hitting my leg with the book. It escalates pretty steadily. And it gets old, FAST, especially since I often say "Wait" just out of principle to try and teach him to wait, even a moment or so, for what he wants. So now instead of Wait, I ask him, "Please what?" and sign Book/Read. Ideally, he will start phrasing requests for specifically what he wants, or the sign closest to what he wants, and it would cut down on the frustration for both of us.
Oh, and Janna SL (the new one, speech/language) is helping us start PECS, Picture Exchange Communication System. We're trying to get him to choose between things, like having a picture of bubbles and a picture of a book, and whichever he picks is what we do.
And he'll talk eventually. Really, he will!