You need to try the website GenerationRescue.org is a good place to start.
What you need to do is get his gut straight...most Autistic children have a
yeast overgrowth...such as our 3 year old. They have a hard time digesting
this and that do to this yeast overgrowth. Once the gut is fixed...and his
diet is on track ((no sugars, GFCF etc.) you can start chelation.
We are currently seeing a doctor in Phoenix, AZ Alan Ketover at the
Valley Clinic...give them a call maybe they can refer you to someone in
your area...