Hi,
Thank you for posting your query here.
The renewal date for a Subscription remains the same date on which the subscription was purchased initially and remains unaffected with the number of licenses you Add (purchase) in future.
Since you wish to Cancel one license from your Creative Cloud Teams Subscription, please refer to the following help article : https://helpx.adobe.com/in/manage-account/using/cancel-subscription.html
You may as well contact Adobe Cancellation Team by clicking on : https://helpx.adobe.com/contact/support.html for chat or https://helpx.adobe.com/contact/phone.html
-click the chat icon at the bottom right of the page to open a chat session
-the chat icon looks like '3 dots inside a circle' at the lower right
-type AGENT into the chat window to connect directly to a person rather than the AI
Hope this helps.
Thank you.