Same here. I have two keys (one as backup just in case). I just wish more stuff would support FIDO2 so I don't need to have as many TOTP keys (since apparently there's a limit on how many TOTP keys it can store).
I have 2 yubi keys for the more important systems and store the rest in bitwarden.
With your 2 yubi keys, is it possible to set one up as a clone of the other? I've been manually adding to both keys but that's a pain when I don't have the backup with me.