Remember this is a plan that used four weeks out of each month (48 weeks in the year). That means that four times a year you'll find yourself with an extra week and no new assignment.
This is that wonderful week where you get to catch up on anything in your food storage or emergency supply that needs catching up on. If you're totally caught up, maybe you can straighten your shelves, or dejunk. If all of that is done, then you've obviously earned the right to admire your handiwork and rest on your laurels for a week. Enjoy!