Waves,
This sounds awful.
I've got no med suggestions.
Except it does make sense to follow through on your first idea of raising the Depakote. Talk to the pdoc about that. If it doesn't work or you can't tolerate the side effects then you can go off that plan and go to another plan.

This first plan sounds obvious and easy and logical.
After you try it you will know if it is the right plan.

Mari