Has the Gundry diet failed you too?

Gundry claims that, of 800 people who followed his diet, after 6 months everybody was cured. He says it himself at 1:17 in the below. https://www.youtube.com/watch?v=AWRkR5fr-Eg I have been following his protocol for 4 months now and still have psoriasis. The first 3 months, I may have unintentionally cheated when eating out, ate rice, possibly too much fruit, and drank vodka. The past 3 weeks I have followed it down to a tee with no remarkable improvement and I am tempted to give it up. When have you guys given up or been cleared?