iCloud Photo Library
If you do not have those 1060 photos in your phone, and they are only on your iCloud, then if you press the 'disable and delete ' button then those photos and videos won't come to your iPhone automatically. You will have to manually download those photos from iCloud, then copy them to your iPhone using iTunes. If you do not download them from iCloud within 30 days, then they will be deleted forever from iCloud, and you can never get them back