Dr Fung's recent explanation of the Dawn Phenomenon was pretty good, clearer than others I've read: https://intensivedietarymanagement....enomenon-t2d-8/
Dr Fung's new book recommends Protein to be 20-30% of total calories, which you could vary by day? If eating only dinner, fewer grams of protein. An Eating day gives you more, but not a huge amount at any one meal seems a reasonable approach.