any advice?

I'm moving out the first week of August. I decided to stay in July because my dad has my sister's this month, so I figured I could help out one last time before I left, I but groceries and pay for the internet and both of our phones. he's constantly starting fights and calling me selfish for wanting alone time sometimes and just constantly trying to make me seem like the bad guy. for years all I've been is a babysitter for him and I feel like he doesn't appreciate my help at all. part of me wants to leave because they aren't my responsibility but I also don't want to leave like that. He's always in a bad mood and starting fights and it's affecting me too, I'm always upset and I've started taking it out on people I love and I feel terrible for it. I'm miserable right now, he sleeps all day while I work and then wakes up and leaves as soon as I get home.