I don't know if this information would help, but I keep running across it in my quests for other health information. I don't have migraines, although used to get pretty bad headaches a number of years ago when I had really high blood pressure ( don't know if the blood pressure caused the headaches or if the headaches caused the high blood pressure). That has since all been long gone.

For what it is worth, have no idea if this will help. But I have found Dr Ken Berry to have a lot of other useful advice.

https://www.youtube.com/results?search_query=dr+ken+berry+migraine

John