My son has autism but we dealt with a lot of the same hard work stuff in the beginning- head banging, screaming, hitting, aggressive behaviour etc etc. It is VERY hard. I know

Going on to GAPS was a lifesaver. Food makes a world of difference. You wont be able to see it with a food diary It's a massive combination of foods and they are affecting things all the time. The diet will fix sleep and the aggressive behaviour.

As for help from therapists, the best help for us was our OT. She had a strong psychology angle and we were essentially doing play therapy. We have now moved and we see a psychologist for the same help. They have been a lifeline. We go weekly and I can say "so this week things have been tough and there is more hitting" etc and they give me strategies and work with him in that session. Those tools help us get by and then next week we go in and I can say "actually, our biggest issue I need help with now is...".

Good luck. There is hope and light and sunshine. Things will get better.