I'm not treatment-resistant ultradian, but I know someone who is and she made strong
improvement by certain changes in her diet:

She removed caffeine, which is contained in some teas, coffees, chocolates and over-
the-counter medications.

She removed alcohol completely from her diet.

(That's enough for a starter! )

There are other things, too, but you might try those and see how they work. Be
gentle with yourself in any effort you make to improve conditions for you. If any of
them work for you, come back and I'll give you some more ideas that she found
were helpful. (She still took medications, though.)