Webp image not replacing on the lazy load & infinity product loop section

On my website, I’m using lazy load for the image and infinity loop. Where firstly load the transparent image. After scroll or completing lazy load coming main source file through ajax and replace img src attribute. But after ajax trigger webp express doesn’t trigger/replace to <source srcset>. Webp Express just replacing images when document.ready(). It should work also when $img.on(“load”)
Here’s the screenshot https://prntscr.com/12lal19