What to do when my new iPhone won't verify my Apple Account?

I got a new iPhone but can’t verify my account bc they want the password for my second Apple account, linked to my normal email address for which i forgot my password.

I put in a recovery request and have a scheduled call/text coming. At the moment i am still using my old phone, but should i move the sim to the new phone for my call as all logged in devices (ie old phone) need to be switched off when the recovery process starts? I know i can receive calls and texts on my unverified phone but if i have to reply to a text i wont be able to.

[Re-Titled by Moderator]

Original Title: new iihone verification issue