joe,
You are doing great, There is no need to da.
I no longer believe in the WT, but am in for my old mother's sake. She sacrificed a lot for me and my siblings, and I'd rather see her die peacefully thinking about being resurrected and meeting my father in paradise, than shatter her final days by leaving the WT officially.
JW's who come to meet her enjoy my association and I just go with the flow. Some of these in my congregation are real nice caring people who are doing their best to serve their God sincerely. I don't have any issues with them, and neither do they have with me. It doesn't harm me to read the Bible to her or help her set up the broadcasting programs.
For elderly parents, the time for waking them up has long gone. It's the time to give love and attention.