The easiest way to do it is to cancel your monthly here first:

https://app.ompractice.com/account/memberships and click the red "view" button, then the red "cancel" button.

And then sign right up for the annual here! https://app.ompractice.com/memberships

Please note: If you have access to a discounted membership from an employer or insurer, but can't find the membership links, drop us a note and we can give you the updated annual link.