Only load contact form 7 scripts when needed in wordpress

Only load contact form 7 script when needed

/**
 * Only load contact form 7 script when needed
 */
function cf7_dequeue_scripts() {

    $load_scripts = false;

    if( is_singular() ) {
        $post = get_post();

        if( has_shortcode($post->post_content, 'contact-form-7') ) {
            $load_scripts = true;
        }

    }

    if( ! $load_scripts ) {
        wp_dequeue_script( 'contact-form-7' );
        wp_dequeue_style( 'contact-form-7' );
    }

}

add_action( 'wp_enqueue_scripts', 'cf7_dequeue_scripts', 99 );