How to put all photos into iCloud Shared Photo Library
For about a decade my wife and I shared an Apple ID. Recently my wife switched to her own Apple ID (because Apple Health kept mingling our data) and we've been waiting patiently for iOS 16.1 to come out so we could share all the photos we've accumulated over the years. So now that iCloud Shared Photo Library has come out and I've set one up, I'm left wondering how I get my 10,000+ photos and videos into this shared library so my wife can see them. Apple's Support page doesn't say anything about this subject:
How to use iCloud Shared Photo Library - Apple Support
Surely I don't have to manually select and move 10,000+ photos?
iPhone 14 Pro Max