Questions about hair growth and minoxidil

My endocrinologist recommended that I try minoxidil for my hair loss at my temples, which she also noted appears to be pretty much all gone. I have heard that you have to use Rogaine every day or any hair gained will fall out and not grow back. I have also heard that HRT helps regrow hair. So my questions are:

1. Would it make more sense to use men's or women's Rogaine? And what about the extra strength one?

2. Would I be able to use both Rogaine and HRT, and then sometime in the future be able to tell how much hair was from HRT and how much hair was from Rogaine, and make a decision on whether I grew enough hair on HRT and potentially stop using Rogaine? Or would it be impossible to tell? Or is that just not how it works?

I don't want to use Rogaine if HRT would give me enough regrowth on its own (not that I can know how much it will be now) because I'd rather not have to deal with that every day for the rest of my life if I don't have to. I already have to do that with HRT. I just want to make sure that by using Rogaine, it won't interfere in any way with HRT nor will it make HRT less effective, even if I eventually stop Rogaine.