My dd (10) has ASD and Generalized Anxiety Disorder. She takes 1.5 mgs of melatonin nightly, which really seems to help. Her Dev Ped (whom we love) also suggested that she pick out a boring book to keep by her bedside that she can read if she wakes up in the middle of the night. The Ped recommended Little Women, LOL. She also has a stuffie with a pocket given to her by a child life specialist. When she's particularly worried about something, she writes the worry on a slip of paper, then puts it in the lion's pocket so he can worry about it so she doesn't have to. That worked really well when she was younger (6-7), she doesn't do it as much now.

-Amanda