@WorriedMom21
I reread your post and your sentence that my question was referring to and now I know that I got it right ;-) Besides, I read your other posts about your son on this board, too. Thus, now I know I really got it right ;-)

One more thing I would like add:
I did not want to sound so negative.
Your son is just 15, so he is young. Maybe this will help him recover given more time and being patient!

I wish all the best to your son!