I was trying to teach a baby that lived w/me some signs when Adam came home... knowing it would help him communicate early. He could hear perfectly, listening was a different story LOL
Im trying to find a medium that catches A's attention long enough to teach him more and more signs... he doesn't watch enough TV to get into Signing Times, but momma likes them LOL.
I have no intention of withholding communication from Adam, I mean will it kill me to learn sign language?? NOPE... I don't understand why some parents don't.
As far as holding his attention, he will of course be more interested in some things than others, but you will still have to work within the bounds of his attention span. But, also keep in mind, when it appears he is not really paying attention, he could still be gaining info through peripheral means.
I found one of the best ways to increase my son's vocab was to simply chat with him about whatever we were doing. He loved blocks, and when he was a bit older, Legos. I would sit down with him and talk to him about what he was building, etc. Or we would go for a walk, and talk about the things we saw. Even when he was Adam's age, we could just be in the back yard, and maybe he would spy a bird. He would point and sign "bird". We would then talk about what the bird was doing, what kind of house a bird lived in, etc.
This kind of informal interaction with others is the way a hearing child picks up language, and a deaf child will acquire language in the same way. That is one of the reasons that it is important for a deaf child to have deaf peers, and be around adults who sign, as well. Interacting with different people has an effect on their language development, and if they are around people who can communicate with them directly, it is amazing how quickly they will progress.
I can assure you that learning to sign won't kill you. Frustrate you from time to time, but it isn't fatal, lol. In fact, if your experience is anything like mine, it will enrich your life, and strengthen your relationship with your son.