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I would suggest to take a look at the following guide to see how to set up the date expiration limit of your form: How to Limit Submissions in a Form
Now, if you wish to have it active again after some time, all that you need to do is to move the limit to some newer date or date and time and then enable the form.
You can see how to enable and disable the form manually here: How to Change the Status of Forms
Of course we are here if you need our assistance at any point so just let us know.