South Carolina,
As you already know, finasteride is theorized to help MPB by lowering DHT in the scalp.
By restoring your hormones, you have likely increased serum DHT and, consequently, DHT in the scalp. Removing finasteride also likely gave the DHT a chance to do some damage.
That said, I may have a suuggestion about which you can discuss with your doctors.
Many men opt for trasdermal testosterone replacement therapy, either by gel, cream, or patch.
However, compared to shots (IM injections), the norm is that transdermals increase DHT much more than injections. This is because they interact with 5-AR in the skin.
I began TRT with androgel. My already top of range DHT skyrocketed 3 fold and I began shedding. I have since changed to injections, and the shedding has stopped (along with normal DHT). Further, I added 1 mg propecia EOD about a month and a half ago I want to see how I stabilize and whether or nor I can grow back any native hair and then consider a transplant.
At any rate, this is not medical advice and something you should discuss with your doctor.
I know a fair amount about the topic, if you want, you can shoot me a PM to discuss further.
Good luck.