Okay, here's where I am now... I have heard back from my respirologist, who concurs that coming off Prolia is a "reasonable course" due to the infections. "the only way to know is to stop and try another drug" to see if there is a difference. [as my lung problems could be doing this by themselves]. However when the pattern of shots / infections is so strong, it is a good thing to try.
My appointment with the G.P. is on 13 March, no change there, but that date is one month and 3 days before my six month date for the fourth Prolia shot [which is not going to happen now] So, a perfect moment to do the bloodwork and commence the medication [Fosamax or Reclast] to mitigate the rebound phenomenon.
This week I am due to see the Pharmacist to get her take on the medication choices.
I will get back to you to give you my report on all goings-on !
Thank you and all the best to all who are in this challenging place! Christine

I seem to have answered under the "Support for those quitting Prolia".
All is well.