If your restaurant is using Square to take credit card payments, they are offering some relief.
Free processing up to $2000 worth of transaction
"Processing fees are waived for all transactions for the balance of your sales shown under Sales Balance through your expiration date."
Square Capital Payment Due Date Extension
If you are using Square Capital, then, you can request to extend the minimum payment due date.
To get these benefits, call Square Customer Service. You need to login and get your customer number from your dashboard. (At this time of writing, they are experiencing "heavy call volume.")