Do I need to tell search engines that the site is "maintenance"?

Question

Search Engine Optimization

Let's say Wordpress has a stub enabled using the WP Maintenance Mode
1 plugin. Do I need to tell search engines that the site will be unavailable?
2. How long can you stay in this mode so that SEO positions do not fall off?

Answer 1

:D
if your site is so important to search engines, report
blowing to support

Answer 2

The plugin itself should in this case give a 503 error, if the site is popular, then even a day of downtime has a negative effect

Answer 3

This plugin has flexible settings, but it plays the role of "less negative" on the part of the user, but indexing is much more difficult. Depending on how long you will be in this mode, and so on until the next update of the full database. Look at the statistics of updates in previous months, approximately this will guide you by the date in the current (but not the fact) on Google, if something new is being launched in the algorithms. I give the link https://pixelplus.ru/samostoyatelno/stati/indeksat...
Analyze all the information and get to work, it may sag in positions, but not too much.