I've found I do best with a very similar diet... mostly meat and eggs, some cheese and sometimes onions, mushrooms etc. I notice that some starchy foods hit me worse than others. Legumes are pretty bad on how I feel, and spike me to no end. Similar with wheat products. Corn, rice and potatoes spike my glucose, but I don't feel physically ill the next day like with many other foods.

It sucks, and I wind up cheating 2-3x a week (I live with people that eat different than I do).