Hi Allybally
So sorry to hear of the apparent failure of the current set of treatment, might I mention one other, stillbestrill, an old hormone treatment, which my husband has been in for over 18 months with great success. Frankly, it might be worth a go, often older treatments can be effective but are overlooked in favour of the newer ones. My husband is. Gleason 10 too but has done well so far.
Kindest regards
Allison