>the codes are still going to the old physical phone
This is something that your cell phone carrier needs to sort out. This should ideally not happen, but if your number is operational on the new phone, but you don't get texts, the carrier will help you. This is the only problem you have, right ?
Edit: The above refers to SMS. If by codes, you mean google's notifications in their app, that's a different thing. However, google will offer some alternate recovery mechanism - either SMS or a backup email.
This is something that your cell phone carrier needs to sort out. This should ideally not happen, but if your number is operational on the new phone, but you don't get texts, the carrier will help you. This is the only problem you have, right ?
Edit: The above refers to SMS. If by codes, you mean google's notifications in their app, that's a different thing. However, google will offer some alternate recovery mechanism - either SMS or a backup email.