WordPress Multisite Cron Replacement

Based on https://sabrinazeidan.com/fixing-wordpress-multisite-cron/

<?php
if ( !defined( 'ABSPATH' ) ) {
	require_once __DIR__ . '/wp-load.php';
}
if ( is_multisite() ) {
	$sites = get_sites();

	foreach ( $sites as $site ) {
		wp_remote_get( get_site_url() . $site->path . 'wp-cron.php?doing_wp_cron' );
		
		sleep( 3 );
	}
}