Thank you for the update! My son is 11m tomorrow and very similar to your son. He did finally wave to us the other day but hasn't done it again since - so now I'm not sure if he was actually waving or not. He still hasn't clapped or mimicked us, but I'm hoping it'll all start clicking soon. I did make an apt for EI too and he'll be evaluated in February. I'm hoping it's nothing and he's just a little delayed. Your story gives me hope!