Lots of different options. Each person has to find their sweet spot. Some people fast 16 - 20 hours daily with one or two meals a day. Some people do alternate day fasting. Some do a down day of 500 calories followed by a regular day of eating at least 1500 calories.
Fast, Feast, Repeat by Gin Stephens has a good overview of the science and how to ideas.
Cool I’ll check it out thanks. Lately my diet has been crap but most days I don’t eat all that much at all and I still can’t lose the eight pounds I’d like to.