The best thing you could do is listen to your body. We are all different and there is not a single diet plan that works for everybody. I know people who could eat anything (from healthy to junk) and never put on fat and never get sick, and on the other side I know those who have to be careful. Some can have grain and get the most from them and some get sick from grains, the same goes for meat and vegetables. Our bodies are different and we should respect that. The worst thing a person can do is pick a modern "best advice" and stick to it because those constantly change as you noticed yourself. You`re doing a great job listening to your organism, keep up the good work.