FWIW, maybe this will help you stay the course. My dad was the son of an Southern preacher, and my dad was very, very manipulative, and very much the get in your private business creepo stalker kind of guy.
I ended up living the life he wanted: two marriages, two stepkids and a kid from the first one, being a lawyer (definitely would not have been my career choice) house in the suburbs, the American dream. His American dream, that is.
I started having anxiety and panic attacks and high blood pressure nine years ago, and ended up on beta blockers and tranquilizers.
Dad was silenced forever by a stroke six years ago. He is alive and somewhat cognizant, but partially paralyzed, tubed up, bedridden and in a facility.
It took me five years since then to get Dad's voice out of the back of my head, and figure out that my whole life I had been fighting a war with him for my heart and soul. And even when I thought I had won, by moving out of his house for the last time and "living my own life" I had still lost. I still was not living my life. He was living it for me by remote control.
It took me five years to figure out that other than a few secret instances here and there, I had never really been myself. I had created this guy, this artificial construct, and lived within it, and reached the point where the stress of remaining in character all the time was slowly killing me. After dad had the stroke I ran on inertia for five years, like a windup toy running down.
The magic moment came when I figured out, almost by accident, that dressing female lowered my blood pressure.
Dad never knew I was trans. He may have suspected, given his unnatural interest in my love life. I endured constant interrogations about what girls I was interested in since I was 14. I did not have my first real girlfriend until 21 and frankly it was a relief because it got Dad off my back temporarily. After her, even if I wanted to cruise along and not date anyone and focus on school or work, he was constantly on my back about finding the next one.
And any time I got interested in anything he did not approve of (like muscle cars) his favorite weapon was the negative opinions of other people, just about all of whom existed only in his imagination.
So, FWIW, do not feel bad about keeping your father out of your life when you need to. And do not be afraid to put limits on the relationship if you do decide to communicate with him.