@lindalaw
The information you are seeking is best provided by medical experts. I strongly advise you to talk to your doctor or an endocrinologist to discuss which options would work best in your situation.

I have read that going off Prolia without a replacement medication can result in a sudden and rapid loss of bone density resulting in fractures particularly in the spine. Because of this your doctor/ endocrinologist may want to start you on a replacement medication before going off of Prolia.

I hope you find the help you are seeking.