After pointing the A record to WordPress Hosting, we recommend setting up a Maintenance Mode Page. On this page, users will know that the website is temporarily down. You can also add your contact details so they can lodge their inquiries.
You can easily set up a Maintenance page with a plugin – just double check if the plugin you’re using is safe and updated, of course!
On the other hand, you can also setup a staging site. Staging sites are an excellent choice for eCommerce sites to limit revenue losses.
Staging sites are “duplicates” of your live website. It allows your website to work without interruption while you update your site. Once the update goes well on staging, apply the changes and publish it on your live site.