Well i havent looked at the specifiic options of the workflow scheduler recently but if you cant do every other week then just do it for every week but put a check in the beginning of the first workbook. If its not the 2nd week then exit the workbook with
dbutils.notebook.exit("This is an odd week for the scheduler. This workflow should run next week @ 0:00.")
You can add email notifications as well so you can ensure every other run works as planned 🙂