What can I do to treat chronic migraines/cluster headaches if I tried everything?

Even if it works for a time, it's good. I've tried many, many things. They work for a bit and then I need to switch things up. It's as if my body gets used to things. What I do stay away from are food chemicals.

CBD oil, it’s the only thing that works, also known as hemp oil

Thank you!

Have you tried IV infusion therapy for 5 days takes about 2-3 hours a day and is suppose to break run away headaches so the preventative therapy can work. My husband is going to try this next. Just curious if anyone else had had this therapy and had success?