My 2nd opinion endocrinologist said the same thing as Dr. McCormick. You could do just one Reclast infusion and monitor with blood tests. If you need another, so be it. I have been told I will need one or two to "lock in" gains and then can take a med break. Reclast stays in the system a lot longer than Prolia. Of course you need to talk to a doc. Maybe ask your doc to research the effects of Tymlos after Prolia. Do you see an endocrinologist?