I hope you can watch Dr. Ben Leder's YouTube video on Combinations and Sequencing or get a hold of McCormick's book "Great Bones." Forteo as I remember does not work well after Prolia and does not address rebound. But check those resources out and discuss with your doctor. I have been told the rebound can only be addressed with Reclast (or maybe alendronate) but even then there is risk. If you can stay on Prolia that is good though you said you have dental issues. Or you could go to Reclast!
I hate to say it but the endo at teaching hospital may be more on target than the local specialist.