I think it depends on how much time you have. You could cook every day, but I feel like that would only be possible if you had a lot of time. Typically, I break up my meal prep into 2 nights. 1 night is for meats and 1 night is for veggies/carbs. That will all usually last me for about 5 days or so. Sunday is usually the meat night, Weds the veggies/carbs night. I cook breakfast every morning, though. On the weekends I might actually HAVE the time to cook a nice dinner for myself and I usually do. I think as long as you find a method that works for you you're golden.