I’ve taken the answer from here, where they are changing the order in a different way, but it should work for you. It uses the pre_get_posts
hook to change the ordering for the archive page only.
add_action( 'pre_get_posts', 'my_change_sort_order');
function my_change_sort_order($query){
if(is_archive()):
//If you wanted it for the archive of a custom post type use: is_post_type_archive( $post_type )
//Set the order ASC or DESC
$query->set( 'order', 'ASC' ); // ASC = oldest first, DESC = newest first
//Set the orderby
$query->set( 'orderby', 'date' );
endif;
};
Try this at the top of your new page. I haven’t tested, so please reply here if any problems or it doesn’t work