Custom image sizes only for ACF

add_filter('intermediate_image_sizes_advanced', 'limit_image_sizes_to_acf', 10, 2);

function limit_image_sizes_to_acf($sizes, $metadata) {
    
    if (isset($_REQUEST['acf_field'])) {
        return $sizes; // 
    }

    
    unset($sizes['150x100']);
    unset($sizes['513x499']);
    unset($sizes['276x268']);
    unset($sizes['26x26']);
    unset($sizes['707x834']);
    unset($sizes['115x116']);
    unset($sizes['176x177']);
    unset($sizes['308x208']);

    return $sizes; 
}