iPhone Mirroring selects my old phone despite having gotten a new phone

Hi

I recently upgraded from a 12 pro to a 15 pro after I broke the cameras on it but after setting up my new phone, but whenever I get a notification on my new phone, it doesnt come through on my MacBook until I get the notification on my old phone. iPhone mirroring also selects my old phone (always says 'connecting to iPhone 12 Pro') and I was wondering if there was a way to make my new phone like a primary phone?

Phones run iOS 26.0.1 and my MacBook runs Tahoe.

thanks :)