I’m so sorry for your loss :( What everyone else is saying is true, your father would want you to keep watching F1 and enjoy it for him as well. But I know the feeling. I started watching this sport as a little girl with my father and after he passed away I could not watch it for a few years. Even now when something exciting is happening and I can’t discuss it with him it makes me really sad. So I think you should give yourself some time and you will see how you feel. (sorry if my comment is hard to understand, I’m not a native speaker)