Im new here and by no means a doctor,(this is my opinion)i have found after a couple of weeks or months of regular use i find when i stop for a little break for a couple of days i find myself very irritable,so maybe not a good idea,but as i said,what the hell do i know!my little cousin has autism aswell,so i understand from that point of view,have you tried sports?my cousin is only 7-8,not sure,but he has been doin tai kwon do,and i think thats helps him release as well as self disaplin and focus,hobbies etc could try tier him out,or calm him down,even tai chi,as i said,im no doctor,so dont take my word for it,gudluk with you son!