First, no bad feelings. Seriously, there's no condemnation for wanting abusive behavior to stop. The fact that it's a family member makes it even worse and not permissible.
Next (in case you do this) is to stop racking your brain why are they doing it because you will never find a logical explanation to justify them and make sense. There is no justification, they do so because they choose to. Just putting this out there.
Don't waste your energy in fights, say yes you're right to everything even when they say mental things.
Preserve your sense of sanity, treat them like psychiatrist treats a mental patient.
Focus on studying and working hard so your future is not compromised or sabotaged.
Move out as soon as you reasonably can without wrecking your future, and then also control and limit contact, do not let them reign in your independent life. Draw firm boundaries.
Surround yourself with supportive people who understand what you're going through.
Pray for them but do not have expectations that they will change. It's really to heal and uplift you.
You're honoring them by non enabling and non encouraging them when they are toxic, but instead actively working on preserving the abused person - you - out of their grasp. You're honoring them in the best way they allowed you.
Been through this with my mother. I know it isn't easy. But it will pass. Focus on your future.