Good Luck and God bless you and your son. IMHO you are the parents and you know what is best for your child.
I have read alot of good things when marijuna was used for atisum.
I am very new to all this, just last year I was so against Cannabis, until I was diagnosed with glaucoma, I lost one eye when I was a 8 years old when a boy poked me in the eye with a pencil. Then years on the computer, not to mention I got gang green cause the Dr did not know I had an inch of lead in my eye. No government is going to tell me that i am going to lose any more of my vision. The pressure in my eye got so high, and it was either surgery or marijuana. Go figure, I was against it my whole life. Never tried it, and was always very against it.