prettyflower,
some describe severe osteoporosis as established osteoporosis. So, you've had osteopenia and now your T score is -2.5 or lower you are considered to have established ( or severe) osteoporosis. The scale seek doesn't exist, so we veer off.
Other describe four stages. On this scale -2.5 T score with a fracture would be considered stage 4. You' would be at stage 3 until (luck forfend) you fracture.
Being small boned can exaggerate your bone loss on DXA. And DXA doesn't measure at bone quality. Still, you don't want to fracture and be stage 4 especially in the spine. You never recover the height of the vertebra after spinal fractures, in spite of the best efforts of kyphyplasty.
I think:
You have a good plan for May.
No skydiving, motorcycles, heavy lifting-- especially while bending or twisting.
And I'd say that nothing warrants or justifies the use of Prolia.
I fully recommend the use of Forteo or Tymlos.

The replies containing the deepest regret are those who delayed treatment until after fracture and those who took Prolia.