Possibly the reason he's getting hit more right now is because on the 20th, we have the Solstice coming up. Most of us get hit WAY more during this time period.
Things tend to calm WAY down afterwards. My neurologist said it has something to do with hormones... I know my hits get a crap ton WORSE every time the solstice or equinoxes swing around, and it's not just because my botox wears off! Also, I'm not sure if I'm reading THIS right but... if I am, I think what Verapamil does is it stops you from making excess CGRP, or reacting to it. https://www.ncbi.nlm.nih.gov/pubmed/8523457 Which may be part of what causes our headaches.
Which means, it kind of keeps you from getting worse? But it may not make you better.... So Verap may hold your headaches in place and stop them from progressing, but it's not going to fix the problem. So if you're episodic, you take it until the attacks go poof, and you're over your cycle.
If you're chronic, you take it until your body builds up a tolerance and says 'Fuck this'. At least I'm assuming that's what happens... But I could be COMPLETELY wrong.... I've been known to be. (Ignore all of this, I read it wrooooong I think.)
Back to your hubby....
I second the suggestion of RC seeds, they help SO MUCH. I didn't get relief from oxygen unless I got on it RIGHT away...and currently I don't have it. But RC seeds helped a crap ton. I'm a chronic. I started out chronic.
Good luck! <3 Everyone else gave some super advice here!