Treatment for Biochemical Recurrence

Hi my name is John, I underwent a Prostatectomy and radiation to a local lymph node, 18 months ago, at the time my PSA was 20, and my Gleason Score was 4+5=9. My PSA is now rising with a doubling time of two months, and it is now 0.1. I've had a PSMA PET Scan, and a FDG-PET Scan, both of these scans were clear. My Medical Oncologist has started me on a course of Lupron, Cosamide 50 and Enzaluamde. What does everyone think?