How to survive 98 more days living with someone you hate.

Currently living with my boyfriend and his dad. I hate his dad. He's just a terrible piece of scum. We are moving out the 28th of December. How do I put up with him until then? Right now I'm upstairs in my room by 7:30 so I don't have a chance of running into him if he comes home early. He just does the stupidest things that I end up cleaning up and having to deal with. Ugh.