[MilaM]

It worked for me and I did not have to give Google my phone number to "unlock" the other 2FA options and subsequently app passwords. I used the Yubikey, but I think it should work if you only use TOTP.

[vort3]

I added reserve email and in 2FA setup dialog there's still no authenticator option, just Yubikey, notification on Adnroid, or SMS by phone number.