I had a friend who increased his dosage while he was taking finasteride. He was up to 125% of the so-called standard dose. I'm not sure whether it worked; he was losing huge amounts of hair very rapidly, and every guy is different. I also do not know the exact mechanism of finasteride--that is, exactly how it inhibits DHT. But if you raise your T dose to make up for the finasteride, won't you raise your DHT and thereby induce more hair loss? That's my thinking on it, anyway.
Topical hair loss treatments might be the way to go, but I know absolutely nothing about them except what my doctor told me: that Rogaine is toxic to cats. I wasn't going to risk it, and I didn't want the hassle of applying goop every day anyway.
I don't know whether hair transplants actually work over the long haul, but I've got that idea at the back of my mind in case I lose too much in front. My head is small and my skull is not well shaped. I need hair there! But I might have to just live with whatever comes my way.
I was early in transition when I went on finasteride, and I hadn't nearly achieved all of the changes I wanted. My beard was sparse and wispy, I wasn't sure whether my voice was stable (it wasn't), and I didn't have as much body hair as I wanted (especially on my arms and chest, but chest hair is so slow). I imagine that a man who is later in his transition might not mind any interference from finasteride. But I was truly shocked to realize how much my sex life had been affected. In short, I would rather go bald than go back on finasteride! However, I'm over fifty now, and baldness is typical for guys my age. Losing hair is very hard on young guys.
