Michael crawled yesterday. Until now, he’s been using his legs to push himself around but his arms hadn’t helped his movement until yesterday. In the past, whenever he’d try to use his arms, he’d go into “sky dive mode” (ie pivoted on his stomach with his arms out straight this hands twirling/circling and legs up and kicking). Yesterday he coordinated his limbs and did his first commando crawl to get to the TV remote control.