Need to change start date of seasonal plan

Good afternoon user_oi77pf. I can definitely understand needing to change your seasonal start date if plans have changed. Here is some additional information on how you can do so:

To modify your Seasonal Convenience Plan, follow these steps:

1. Visit the Summary page at www.xfinity.com/seasonal.
2. Sign in with your Xfinity ID and password.
3. Click the CHANGE SEASONAL CONVENIENCE button.
4. Select a new end date for your plan (if it hasn't passed).
5. Check the box to certify your understanding of the rates and charges.
6. Click SAVE CHANGES.

Note that you cannot change the start date if it has already passed, and you can only cancel the plan before it starts. Please let me know if this helps.