Hi Concern, welcome.

Does DH have a diagnosis yet? Some reading/detective work may be necessary; here's a start: headache types

Diary is good—stick with it, and modify as necessary (if you haven't, take a look at some samples) headache diary.

IME, despite what they say, neurologists don't know enough about treating headaches. If you can, try to find one board-certified in headache medicine, preferably one whose practice is limited solely to headaches/migraine.

Doc