Grant Molina, cambriawk@gmail.com[/privaate]
Book was read in the late 80's - early 90's.
Highlights:
Boy is confined to a wheelchair, living with his grandma in a trailer. The town fair is near his home and he really wants to attend, but isn't able to. Somehow he astral projects himself to the fair. The boy's ability to astral project increases. At one point he notices a man who is suspicious or is about to commit a crime. The boy follows the suspicious man to he apartment. The apartment is filled with doll heads hanging from the ceiling.
Sorry if this description seems jumbled, it was second-hand information from my sister. I am trying to help her out. Thank you.
The only book I can think of with astral projection from around that time is Stranger with my Face by Lois Duncan but it doesn’t quite match the description of the book you have here.
Not a perfect match, but maybe ‘Double Trouble’ by Barthe DeClements and Christopher Grimes?
Stuck in neutral by Terry trueman