I guess 160mg is a pretty high dose. I took cogentin years ago for akathisia, and when I was in the hospital I took clonazepam for it, which is a benzodiazepine. Neither of them helped the akathisia. They were absolutely useless. The best way to deal with akathisia is to prevent it happening in the first place. Prevention is best.
Every antipsychotic I’ve taken gives me akathisia in varying degrees.
I’m still trying different meds every couple of months, hopefully we find one that doesn’t cause it before we run out of medicines to try.
Cogentin and Propranalol don’t help as much as they should. I don’t know any tip other than try a different medicine and even that might not work. Most people don’t react that way to every medicine, I think I’m treatment resistant.