Dad.... Urgent help🙏🏻

Guys I need help 🙏🏻. My dad is a pain for me. He abuses both me and my mother. I feel very bad for my mother as she sacrificed her career and all for me . After so many years of marriage she is not happy and still not well settled. Every second i waste , i think that I am stabbing my mother with a knife. I scored 98+ percentile in first attempt and now I don't know how to proceed ahead with this kind of house environment . I feel very ashamed of wasting all the time I had during these two years . Now I have my boards going on and I am barely studying as my mind is fully engaged in rescuing my mother. I consider him a "psycho" as when his mood is good he motivates me for IIT and asks to take drop if required but at the same time abuses us. Please guide me, I genuinely need it.🙏🏻