I meal plan every week. Since I live with my in-laws, that means that once a week my mother-in-law and I sit down and talk through what to make each day of that week. This usually happens Saturday morning. We plan through the week up until the next Sunday. I find planning a bit more than an exact week is important. Otherwise, you could end up needing to meal plan for the week and on top of that, for dinner that very same night. I find that stressful. I never like waking up not knowing what I’m going to make for dinner because that automatically means a good-sized chunk of my day is going to get eaten up deciding what to make.