Reoccurring Episodes

I have had 4 episodes of bppv since October last year. I saw doctor after first episode. Each episode is classic bppv and responds well to epley maneuver. My vitamin D was found to be low after first two episodes and it is now at a normal level. I had an episode last night again. Is there anything I can do to prevent future episodes? Should I see a vestibular therapist? Any other recommendations?