So sorry to hear your migraine pattern is on the uptick due to the introduction of this medication. We have a forum which has some relevant information that you will likely find useful here: https://migraine.com/topic/beware-of-proton-pump-inhibitors/
As to how to manage the migraine attack frequency increase, I would suggest working with your migraine specialist to talk about both conditions (if you haven't already). And, if you're not already working with a migraine specialist, this might be a good time to shift to having a specialist manage your care since you are juggling two conditions which are combining to make matters more complicated for your migraine disease. Here is an article with a link with information on migraine specialists in the US to help you find one in your area: https://migraine.com/blog/the-mrf-directory-of-headache-and-migraine-specialists/
Thanks so much for your post.