My Prostate Cancer so far…

Hello, in early 2020 I had a PSA which came back at 27. My urologist wanted to check it to be sure and the next one came back at 37 so we obviously had a problem. I had a biopsy which showed Gleason 9 (I forget the breakdown but about 1/2 the cores were 4+5 I recall) Bone scan and CT showed no spread so I  had radiation and 18 months of Lupron. About a year after stopping Lupron my PSA suddenly shot up to 8 and urology sent me to oncology who ordered a PSMA PET scan which showed a clear prostate but spots in my pelvis, L5, head of my femur and “possible” involvement of 1 lymph node. Was put back on Lupron and Xtandi which made my PSA plummet to a very low 0.014. After maybe a year, oncology, in an effort to alleviate some side effects (mostly hot flashes) reduced my Xtandi by 1 pill from 160mg daily to 120mg. My next PSA rose to 0.028 and the next to 0.11. They’ve told me to go back to 160mg a day but I’m wondering if anyone else has had a similar situation? I haven’t had an PSA since increasing the dosage (scheduled for about a month from now) but I’m freaking out! Was much happier with the really low PSA. Anyone else have hormone therapy effective for only a year or could the one pill have made a difference? I’d appreciate any insights members might have.