@gravity3 sorry for your complicated situation. I don't know your history other than what you just stated. Current and prior DXA's, any fractures, your age, reactions to previous osteo meds if any, and a timeline of what you did when and the result. Any comments I would make would just be suggestions of possibilities. Of course others would likely chip in.
What you are facing is what all of us taking osteo meds are facing or will be facing. That is none of these meds leads to a solution where you don't have to keep doing something else. You cannot safely take the bisphosphonates forever, some seem to think you can take Prolia forever but if you ever have to stop woe is you and the anabolics are for short term gain and something else has to be done to keep what you gained.
One question, what did you mean by an Evenity holiday?