Friendly advice: make sure that, if the time comes, you get a speech therapist sooner rather than later if the speech is delayed too much and the fact of not being able to communicate causes him distress. Early intervention helps so much, so it's great you have a diagnosis at this young age...
I can second that; my daughter used to get very upset interacting with other kids when she got into daycare (because of a delay in speech development). I would be playing with her for hours each day - it was all very repetitive and she was quite closed up within her own world, but then it all cleared up.
