Unless you have some form of Telogen Effluvium or combined hair loss, diet and biotin and special non-dandruff shampoos and hair vitamins are simply not going to have any effect one way or the other. I am all but certain that those aren't your issues but something is obviously going wrong cause you are on here all of the time and on many threads so you are putting in the research.
The problem as I see it is that you have pretty much an optimal stack for your protocol as a male. There's nowhere to go except sideways. The only thing that I really see is that maybe you need Keto or Selsun Blue for inflammation. I would also advise you to dump all of the experimental meds if your condition is continuing to worsen. I don't think that we have much of an idea about how RU or CB or alfatradiol work when combined with finasteride. Of the three, alfatradiol is probably the one with the most science but eh, it's nothing like estradiol even though they are technically analogs.
I am kind of stumped and that has happened a couple of times today with a person doing everything right and just nothing happening. We might consider trying massive dosing of finasteride or duta or both. I was formerly hopeful that topical estrogen on the scalp could be a solution and it might be worth trying. You won't regrow any hair but estrogen might have localized effects that work with finasteride for better maintenance.
Janey