My experience. Diagnosed with MBC 12/21 at72 years of age. Spread to bones. Took Letrozole 2/1/22 through early June 22. Refused Zometa. Feb. 22 had 5 sessions radiation to C-3 vertebrae. Took Ribociclib for a few weeks in March April 22 which caused problems. Refused to continue Ribociclib. May 31 and September 19 had clear scans. No cancer meds between scans or after. Oncologist recommended returning to Letrozole in October which I refused. I will have a full body PET scan and probably CAT scan in May 23. The worst part of this experience and the only time I was physically ill was August through October because of the side effects of the remedy for the side effects of Ribociclib.
Good luck with your decision.