I did this recently and basically there's a way of requesting adding another mobile number to the account as a recovery number.
You put in the application, wait about 4 days and then you'll get auto approved (I can't believe any human looked at this process) and you can then set that number as the recovery number.
It seemed to circumvent the whole MFA thing pretty easily but the penalty was time.
No idea what checks were performed in the background by Apple, I suspect none. It seems like the 4 day wait was just to make me feel the system would be secure if someone tried it to me.
You put in the application, wait about 4 days and then you'll get auto approved (I can't believe any human looked at this process) and you can then set that number as the recovery number.
It seemed to circumvent the whole MFA thing pretty easily but the penalty was time.
No idea what checks were performed in the background by Apple, I suspect none. It seems like the 4 day wait was just to make me feel the system would be secure if someone tried it to me.