Lots of salt. You should be eating around 5 grams per day. I mix a bit of iodine fortified table salt in with good sea salt, I like Redmond’s. Eat fatty red meat. Lamb and beef. Eat a lot. Your body will tell you what’s right as you progress and become fat adapted. I eat 2.5-3 lbs of beef daily. Try to eat within an 8 hour window to give yourself time without food in your stomach daily.