We follow a more strict diet on the forum. Quinoa and rice should not be eaten on the diet and should be saved for stage 3. They both ferment in the gut and don’t contain many beneficial properties.
Oat bran, buckwheat, and millet should be restricted; its up to how strong your body is and what you can handle. I would say 2 servings per day max. I eat 1/3 cup buckwheat in morning and 1/4 cup at night some days.