There is probably a study on this, but I think that age plays a role and also the type of ADT you are/were taking. I did an injection of Eligard so it will likely continue to leak into my system for a while. I'm 53 and my health team indicated there it is probable for a modest recovery in 6-15 months.

This depends on age and luck. The older you are the longer it takes to recover testosterone. One rule of thumb is it takes as long as you were on the drug to recover your testosterone fully. With Orgovyx it usually comes back quicker however.

Recovered 80% in 8 mos.
My pretreatment Testosterone was mid 400s (73 yrs old).
4 mos Orgovyx tx; 8 mos post tx mid 300s.
Best wishes.