Just as a quick one for the #MedMastodon folks that have already found new homes that they wish to use as their new primary account.
You can still move your follower / following relationships from MedMastodon to your new instance (Or if you want to make MedMastodon your primary account again it will work the other way around as well) and there's a really good @FediTips guide here on how it works and how to move your relationships - https://fedi.tips/transferring-your-mastodon-account-to-another-server/
There is also the ability thanks to @oli to export your posts to a static website meaning you can share your old posts permanently for reference on a website of your own, something that might be valuable if you don't plan to return to your account in the future - https://posty.1sland.social/