Trinity-
I really like that piece too. I posted it on my site a few months ago.
Lori-
I have been in your shoes. What about continuing the piano and theater but doing a PE program at home? It's NOT too late, but I think it will help your son more if you do it sooner rather than later. When our oldest (PG son with AS, hypotonia) wasn't doing any sports or running around in the yard, DH designed an exercise program for him. This included running, push-ups, and sit-ups. J HATED it at first, and it took him tons of effort before he could do even one push-up. But soon enough, he was running well, had better endurance, and he morphed from a chubby boy into a lean one. You can also look at The Out of Sync Child Has Fun for ideas on what to do at home for sensory issues. It's a fantastic resource.
take care-
