Also he doesn't have any eating problems or OCD problems he just doesn't listen and hits everything non stop he can't stop it's almost like an obsessive tic.
Hi there. I have a sensory kid myself. It's challenging, I know.
First, with regards to hitting. Have you considered getting him something safe to hit? Or directing him to a way to doing it safely? Example-- give him a pillow and show him how to hit his fist into that. or get him a little playschool hammer/wood set (with the pegs you hit into the board) or a tool table that has that attachment for kids. We had these. Switch the behavior you are not okay with to something you ARE okay with that gives the same input. Then you should see less of his hitting himself or banging himself.
Does he like tight squeezes? My son is a mixed bag where he loves deep pressure and squeezes but might resist touch. But to this day, if I give him a very tight hug, more like a squeeze, it calms him. My sons OT taught him to hug/squeeze himself too.
How much physical activity does he get? Prepare yourself, my son had to have hours every single day. It's a little exhausting and takes great commitment but makes a world of difference. Sensory or neurological related impulses become less prominent when a child has lots of physical activity.
I'll help any way I can.