I am very poor at explaining things and please do not do this if it could injure anything else you have but sometimes this has helped some people.
Some people have Meniere's Disease.
My ex mother-in-law had this. She found on the Mayo clinic this treatment she said. You lie on your bed, with your head extended over the edge face up. You gently and slowly ... very slowly now.... TURN YOUR HEAD back and forth. She did this twice and twice a day for not sure how long.. can't remember but she said it worked and the dizziness went away.
Take caution though I don't know if you have anything else that this could disrupt. Maybe ask your doc if it's ok