Hi there.
Welcome to the NeuroTalk Support Groups.
The Autism forum is sometimes a little quiet. You may find more support and information to help your son and you on the Bipolar forum which is usually busy. They're a great group of people there.
Here's the link.
Bipolar Disorder Forum
There's also this sub-forum below.
Parents with Bipolar Children
I'm sorry your son is having such a difficult time. I hope you find some answers.