I guess try to follow 3-2-1 backups as closely as possible: 3 copies of your 2-factor, 2 different mediums (a Yubikey and recovery tokens printed on paper), at

I guess try to follow 3-2-1 backups as closely as possible: 3 copies of your 2-factor, 2 different mediums (a Yubikey and recovery tokens printed on paper), at least 1 in a different location (safety deposit box, trusted family members house, etc).