Auto upload photos after not uploading for a while

Nextcloud version (eg, 20.0.5): 20.0.9
Operating system and version (eg, Ubuntu 20.04): Linux 5.4.0-72-generic x86_64
Apache or nginx version (eg, Apache 2.4.25): nginx (I think)
PHP version (eg, 7.4): 7.4.16

I am using Hetzner Storage Share.

I am using the auto upload photos feature in the iOS Nextcloud client. It works and Nextcloud works. However, for a few months, no photos were uploaded (and in the meantime I switched providers). Is there a way to upload all the photos from my phone, except the ones that already have been uploaded?