You can back up these "Time-based One Time Password" function instances.
The program called "andOTP" has been ready since 2018. 
Also supports OpenPGP backups, encrypted backups, and database encryption.
Will also show the 'secret' string for transfer to KeePass variants... then you can copy and paste the result of the [RFC 6238] algorithm from a password manager.
Available at Fdroid, and the dreaded Google Play Store.