Healthy testosterone level while transitioning is a big deal. Too many just want to totally nuke any T levels, but that's a bad place to be. For some reason I don't seem to be able to go much lower than high twenties, my latest T reading was at 28 ng/ml, normal hovering around 35 ng/ml. Anything below fifty is usually considered suppressed and its typically enough for getting nice body changes on a healthy balance. Also, the way BO works is said to deal with aromatase a whole lot, that means we might benefit from having some free T around so another reason to aim for the healthy suppressed levels rather than T being completely absent.
A good idea is to test out with blockers, how much you need and which type suits the best. Then play with estrogens to find an equilibrium. Then top it off with keeping at least calcium, D3, MSM and multivitamin going on to ensure you keep bone building stuff running. I'm sure keeping HGH high enough with exercise and supplements helps too as it of course deals with bone regeneration too.
I've tried to pay attention to this as I have really sturdy bones, broke only one in my entire life which is almost a miracle. I'm afraid that age and HRT are making them more brittle, but we know ways to help with it so I guess it'll be alright.

Its definitely a thing to pay attention to.