If you go to DHMC, make sure you call the headache clinic not general neurology. Headache specialists are just more knowledgeable. I see a really good NP there. There might still be a wait as they lost a headache specialist and to my knowledge, haven't replaced her.

Unfortunately, wait times to see a headache specialist are LONG, because of a shortage of those with specialized training (~700 across the US).

One option, if it's financially feasible, are telemed headache specialists. In addition to my DH headache doc, I see an amazing one through Neura Health. The consult is out-of-pocket. He can prescribe in Vermont and that would go through insurance. If they end up thinking you need any testing, they can work with your PCP to order it.