You might want to give dry shampoo a try.

Rinse with beer. Helps me.

I’ve been told excess shampooing and conditioning leaves a build of gunk in your hair. Try a paraben free shampoo and conditioner, they’re meant to break down the build up and not leave any of their own

I’m not sure but try Google for suggestions. I think washing in lemon juice or something that has citrus may get rid of extra oils if hair shampoo for Oily hair doesn’t work. Good luck.

Not sure about home remedies. Quite often, hair becomes greasey when it’s washed too often. So if you can stretch out the time between washes, I think this might help