Joy Eat – Weekend vs Week Days

Planning a joy eat on the weekend is challenging, as I am more likely to go overboard on the weekend. My week days feel more structured and I know I will do better with including a joy eat during the work week. Is it okay to make part of my protocol that joy eat is planned during week days only (and, of course, planned ahead of time)? Or is there thought work that needs to be done around weekends? !!!