add_filter('acf/settings/load_json', 'my_acf_json_load_point');
function my_acf_json_load_point( $paths ) {
$custom-json-folder = '';//PUT HERE YOUR PATH LOADER BASED ON OPTIONS
unset($paths[0]);
$paths[] = get_stylesheet_directory() . '/my-custom-folder/'.$custom-json-folder;
// return
return $paths;
}