Sorry to hear that Humira isn't helping relieve your symptoms.
I don't have a lot of a personal advice on diet, but Ivy put together this nice summary of diet threads a couple of years ago:
https://www.healingwell.com/community/default.aspx?f=17&m=1535560
You may find some more recent discussions on any of these specific diets by typing the diet name into the search box above (just under the "join healingwell" box.)