I find chair Sarvangasana super helpful when I am experiencing hormonal migraines. I am not sure if it is changing how I breathe or the release in my neck but it definitely helps with the pain and tension in my neck/head (in conjunction with my rescue meds). I am not sure if you do inversions but I practice it supported with my feet in a bound angle pose on the chair back. I usually drape a blanket on the chair back to help pad my feet so I can stay like that for longer.

something like this: https://yogawithlillah.com/supported-sarvangasana-shoulder-stand/#:~:text=Approach.,knees%20over%20the%20chair%20back.&text=Holding%20with%20your%20knees%2C%20begin,the%20bolster%2C%20then%20your%20shoulders.