Good to hear psa vastly dropped. Its a relief when treatment starts working and definitely helps increase positivity.
My husband was told the same, he will be on degralix every month indefinitely, regardless what other treatments he may move on to. At the start of degralix he was given 2 injections... Think because psa was in hundreds and wanted to get it down urgently.
I'm not sure what area your from but my husbands oncologist in Highland provided us with a folder of information about treatments (Advanced Prostate Cancer Explained), produced by Prostate Scotland. Its an excellent source of info alongside this forum.
Hoping things are feeling more hopeful for you both. X