I'm moving to @wzuidema. Hopefully the migration will go as smoothly as promised.
@josipk I followed this recipe:
https://mastodon.social/@Gargron/103393780267601137
with the new account in a private tab, and the old account active in a regular Firefox tab. It took some time for almost all my followers to be migrated. I saved my follows to csv on the old account, and uploaded them manually on the new account.