Hormone Replacement starting at 75yrs old

Doing reach, I have decided to try HRT with testosterone, very low dose. I’m in pretty good health, but was diagnosed with Polymyalgia Rhuematica 2yrs ago. I’m Just trying to make a better life with what yrs I have left. There are so many positive messages out there, and yes I’m on the older side. I have 6 daughters and we have all been doing a lot of reading on this subject. Is there anyone else trying HRT at an older age?