Split CMS collection list into dates

Hey,

I have a client who needs a detailed CMS structure and I cannot find, (yet) a solution.
What he wants is:
A collection page that lists sites he’s visited. Each site to have a dropdown menu of the dates he’s visited. Then each of these dates to be linked to a gallery of images for that specific date that opens on a seperate page.

Do we need to set up a collection for each date or can we tag the images with dates so they are grouped by date and not collection?

Thanks in advance


Here is my public share link: https://preview.webflow.com/preview/celledge?utm_source=celledge&preview=ccbed61333d673a34b6d8b630b371056
(how to access public share link)