Slick slider - Lazy loading and responsive images

I’m using Slick (slick - the last carousel you'll ever need) for my sliders, combined with the lazy loading functionality which forces me to leave the “src” off on my images in the editor, and instead add a “data-lazy” custom attribute.

Everything works as expected, but… it’s preventing responsive image sizes from being loaded (therefore increasing load time on smaller breakpoints).

I’ve tried adding “data-srcset” and “data-sizes” custom attributes to my images to mimic how webflow loads responsive images, without success.

Has anyone encountered this problem before? Am I missing a simple solution here, or should I try using something like lazySizes in combination with Slick (not sure how I would do that though)?

Any help greatly appreciated !