Some suggestions:
1- You love Allah, right? You like to serve Allah, correct? Treat him nicely for the sake of Allah. When he asks you to do things for him, realize you are doing it for Allah, and you should love working for Allah.
2- Don’t judge him. You may not fully know what his real life circumstances are. May he has been through a lot in the past. Try to love him more by seeing as a human being whom Allah assigned to be your father. Pray for him. Ask Allah ti truly guide him.
3- Read this Dua once in a while:
https://www.duas.org/sajjadiya/s24.htm