This is fasting oriented. I’m wondering if you’ll get answers like you want from a different subreddit?
All I can offer you is a quote from Michael Pollan
“Eat food. Not too much. Mostly plants.”
I interpret this to mean, “Eat REAL food rather than “diet” food. Not too much and certainly not too often, so time restricted eating and no snacks. Mostly green leafy salads for nutrients.”
But mostly what you are going to get here is probably going to be fasting related and not to worry so much about grams and such so long as you get enough salt.