Definitely ask your doctor about this.
I'm also older, nearly 3 months on T, and while I haven't had any noticeable hair loss yet, I expect to, given that there's male pattern baldness on both sides of my family. I'm particularly concerned right now, because my T level is too high, and my doc doesn't want to lower the dose again just yet, (it's already very low) because she thinks it may be caused by an interaction with some metabolic stuff that I have going on, that we're also treating. I've started using minoxidil (Rogaine), at least for the time being -- my doc said before that she can probably tweak my T dose to minimize balding, but that's sort of on hold right now. Once I'm fully transitioned, I'd certainly want to go to a lower, maintenance dose, in the hope that that might also help to slow going bald.
You might ask your doctor about finasteride (Propecia), which sounds like it might be a better drug: it works by blocking the enzyme that converts T to DHT, which is what actually causes MPB. (I inherited a supply of minoxidil, so I'm using that right now.)
Unfortunately, neither drug works for everyone.
There's a
pretty detailed article on dealing with MPB on the Hudson's site.
Life is full of tradeoffs.... m'self, I'd rather be bald than miserable, but I'd still prefer neither.