Have you seen this new feature in Sonoma @a6ff0b2b ?

"and when [iCloud Photo] syncing is paused, a Sync Now control will appear. "

https://chirp.enworld.org/system/media_attachments/files/111/181/790/435/686/899/original/98542e421ddc5b77.png 

 @68d87af4 I haven’t seen it yet, but I’m usually waiting for face detection and not syncing…