If you've already planned some lessons in a planbook with a weekly schedule, and then you realize that you actually need a planbook with a rotating schedule, then you'll need to do a few things to create a new planbook and move your lessons over.
First, you will need to create a new planbook with a rotating schedule. You cannot switch your planbook from a weekly to a rotating schedule.
Then to learn how to copy lessons from one planbook to another, please reference the "Copy individual lesson or units from last year's planbook" article.