Can I suspend the collection of responses (temporarily close the form) and reopen it in the future?

When the deadline for responses passes, I would like to close the form to submissions but reserve the right to reopen it for additional responses in the future using the same form link.

Yes, this can be done by setting an Expiration Date in the Form Limits section of the form's Preferences. Please see the following guides:

How to Limit Submissions in a Form

How to clear your form expiration's date

If you need further help with this, we'd be happy to provide it.

Cheers