Delete full resolution photos from phone after iCloud sync
I screwed up.
In migrating to iCloud photos on my iPhone, It appears I downloaded 1/3 of the originals to my phone and it is consuming all memory. Migration on the iPad went great. New photos sync fine with iCloud across all devices. Originals are stored on the Mac.
How can I start fresh and remove all the photos from the iPhone without deleting them from iCloud?
iPhone 13 Pro, iOS 15