So sad to know that your father has fallen under the influence of "Celtic Women." My wife loves them too!
But seriously, what you might want to appreciate about this is that you actually care about your father, and he seems to care about you (of course in a weird JW way).
If my JW mother died tomorrow, I honestly couldn't care less.
So although it can be difficult, enjoy what you have, as strange/disturbing/odd as it is.