For now only by custom code. Set autoplay to true (On webflow designer) and set data-autoplay (Js attribute) to false (0) by custom code.
Copy-Paste this code before body (Under page setting).
** This code stop all sliders on the page.
<script>
/* if screen width is more than 767px */
if (window.innerWidth > 767) {
stopSliderAutoPlay();
}
function stopSliderAutoPlay() {
var slider, i;
slider = document.querySelectorAll(".w-slider");
for (i = 0; i < slider.length; i++) {
/* stop webflow slider autoplay */
slider[i].setAttribute("data-autoplay", "0");
}
}
</script>