How to backup from old phone

See this article.

Transfer data from your previous iOS or iPadOS device to your new iPhone or iPad - Apple Support

I suggest backing up your old iPhone and transitioning from that backup.

How to back up your iPhone, iPad, and iPod touch - Apple Support

Even more importantly, be certain you back up your new iPhone regularly!

MichelleJ94 Said:

"How to backup new phone from old phone"

-------

Quick Start:

If you want to set this up and transfer data over, use Quick Start. See Here: Use Quick Start to transfer data to a new iPhone or iPad - Apple Support