Hi there,
I checked the issue more in-depth, but as I can see, it needs to be handled directly on your store, as it depends on the specific case.
Please let us know your store URL and the 4-digit collaborator code so that we can send you a partner request to access the theme. You may use our contact us page or the live chat feature to provide your details.
Additionally, as you mentioned, you may try the default Slideshow section that is available on the Dawn theme. It has that kind of logic that you require. Also, adding a Richtext section below the slideshow and hiding it on desktop could be a solution too.
Let me know