Need to Replace Temporary Google Voice Number Without Affecting Student Discount

Hello Xfinity Support,

I recently activated a new Xfinity Internet account through the college student offer. During account setup, I used a Google Voice number because I did not yet have a permanent U.S. mobile number.

My account is now active, and my college student discount/promotional pricing has already been applied successfully. However, the Google Voice number I used is temporary, and I may lose access to it in the future.

I would like to replace it with my permanent U.S. mobile number once I obtain one. Before making any changes, could you please confirm:

1. Will changing the phone number associated with my Xfinity ID affect my existing college student discount, promotional pricing, or any other benefits attached to my current order?
2. What is the safest procedure for replacing the current Google Voice number with a new mobile number?
3. Can I configure my email address or another method as a backup for account recovery and identity verification?
4. Is there anything I should do now to prevent losing access to my account if I unexpectedly lose access to the Google Voice number?

I would like to keep my existing account and service order unchanged and only update the phone number used for account access and verification.

Thank you for your assistance.