Tuesday
Tuesday - last edited Tuesday
If you do a search of this forum for "vacation stop" or "suspension" or similar terms, you will find that, unlike with legacy digital cable where you could stop TV or Internet or Home Phone for something like $10 each, the vacation stop with Xfinity is an all or nothing procedure.
The technology is different and it's more difficult to separate Internet and TV and Home Phone, etc. so it's all or nothing AFAIK.
You would think that they would have something in place for those with SHM, but perhaps there are not enough people in your position to make it worth their while. It's interesting that someone offered to keep your Internet "active" while actually "suspended".
It's not technologically impossible to do what you want - it's just not part of their normal procedures. Good Luck and please advise us of your outcome.
Edit - one option may be to cancel the services and subscribe to the least expensive Internet package. When you come back, you may even qualify for "new customer" pricing.
See the posts in the following thread for additional information:
Tuesday