Hi MM
Sorry to hear that you're having a bout of BPPV.
My wife has had recurring episodes of BPPV for several years now.
The doctor told her to do the "Epley Maneuver" to stop the dizzies
and it works quite well for her.
It's similar to the "Canalith Re-positioning Maneuver".
Here's the instructional video for the Epley Maneuver that her doctor
instructed her to follow:
https://www.youtube.com/watch?v=9SLm76jQg3gThere are dozens of similar videos on You Tube for the maneuver.
Actually ... it looks to me like you could accomplish these same
head maneuvers with a spirited ride on the Dragon

Best wishes to you in getting some relief.