Developer Handoff Issue

I invited the developer of my working company to get access to my Figma design file. He used the exact same method as what I have shown him in the video screenshot to guide him on how to export every design elements and icons as 1x, 2x, 3x (png) and SVG format. There are some icons example I set the size in 24 x24 but because I have added the shadow effect behind the icon and so every time he exported those, it will always get 52 x 52. How can I get rid of exporting the icons + shadow at an exact 24 x 24 size?

Thank you.