Minimize impacts with Google Search. Quote and source link below:
“If your situation is temporary and you plan to reopen your online business, we recommend keeping your site online and limiting the functionality. For example, you might mark items as out of stock, or restrict the cart and checkout process. This is the recommended approach since it minimizes any negative effects on your site’s presence in Search. People can still find your products, read reviews, or add wishlists so they can purchase at a later time.”
https://webmasters.googleblog.com/2020/03/how-to-pause-your-business-online-in.html
If you would like additional help with this feel free to ask.