Russia Prepares to Disconnect from the Internet
twitter.com
twitter.com
TL;DR:
Check and actualize the credentials for registrars, change passwords, use complex passwords, use MFA if available;
Move to NS located in Russia;
Remove the loadable JS from the foreign resources (analytics, banners etc) from the HTML templates;
If hosted at a foreign hosting move to the hosting services located in Russia;
If the service is not in .ru TLD move to .ru TLD, whenever possible[0];
On the second page #6: report if the resource should be available abroad.
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Honestly, pretty sensible directions for any country. I don't think US Govt would be happy to host some vital services in Alibaba Cloud in Beijing.
[0] "whenever possible" - now that's actually surprising