How to change the main site mirror in Google?

Question

Google

Good day everyone!
Help me to correctly transfer the main mirror to Google Search Console
I had a domain in Google Search Console - https://www.site1.ru/. I made a domain mirror for this domain - https://www.site2.ru/
Now the site is displayed as www.site2.ru in the search. I need to remove www from the site address.
You can't select a major version of a site in Search Console.

As I understand it, you need to unstick the mirror from www and stick a new one without www?
Please tell me the sequence of actions. And how long will this change take approximately, because there will be a re-gluing of the mirror and the site will disappear from the search?

Answer 1

I need to remove www from the site address.

- why do you need to do this? If the version with www was not needed in the search, then it was necessary to initially set up a 301 redirect from the version with www to the version without www