I too have struggles still with my dad. Things are better ...he tries. I try too. But, it kinda sucks that either of us have to try so hard at something that should come naturally. He continuously asks me when I will 'come back' to the faith, and repeatedly asks me to attend church services with him. I understand the issues you're dealing with...sending you hope and love. And a hug.
You can't change him, but you can take deep breaths and accept that he is who he is, and you can only change/control how you react to him.
