Is there a way to suspend orders in the Shop App

Hi all.

Occassionally we have to close the checkout on our store to allow us to catch up fulfilling orders we have already taken.

It is quite easy to do on the actual Shopify store using an app and also some coding but I can’t find a way to close the checkout of the Shop App?

Does anybody know of a simple way to do this please?

Or alternatively does anybody know if deleting the Shop sales channel completely deletes your store or can you re-activate it later on? I wouldn’t want to lose our reviews and followers.

Thanks for the help.