I would ignore lengthily supplement based protocols, and go for the HC. I mean this with no disrespect but I feel you shouldnt be at your age going through a 'healing' journey and trying out various poisons to see if they will work or do anything or not...enjoy the years, and if isocort works for you, then low dose HC will probably also, but it might mean taking it up to the day you die.
Theres no harm in doing the supplements and the HC...
Have you contacted Berkewitz to check they are removing HC? sometimes products are removed when sale/website as they need refinement maybe based on legal issues (sometimes many plant based materials get outlawed for human consumption from time to time so maybe Isocort was one of those), it might reemerge with a new ingrediant list (like it did from the original animal based product)