My account is now run by my institution, how do I make sure that my credit card doesn't get charged

Hello, I work at a university that previously didn't have an enterprise account, so for a few years I have been paying out of pocket for Adobe Acrobat using my .edu address. My school has now started to pay for us to have a Creative Cloud account so I no longer need to pay for the access connected to my .edu email used to create my Adobe account. How do I ensure that my credit card will not be charged this month for Adobe Acrobat access. I didn't see an option to remove my payment information now that the account is an enterprise account.