Add form after woocommerce admin order edit

You can use the other action which called before wp_footer. You can use action “in_admin_footer”

// define the in_admin_footer callback 
function action_in_admin_footer() { 
    global $pagenow, $current_page, $post;

    //$current_page->post_type === 'shop_order' 

    if( $pagenow == 'post.php' && !empty( $_GET['action'] ) && $_GET['action'] == 'edit' && $post->post_type == 'shop_order' ) {
        // make action magic happen here... 
    }
}; 

// add the action 
add_action( 'in_admin_footer', 'action_in_admin_footer' );