@Kelsey he generally screams in pain when he’s teething. I don’t believe it’s pain related but could be wrong x
I have heard some people say there can be a small 9 month sleep regression. My little is currently moving all over her crib at night too, but she doesn't usually whine. She looks more like she's practicing crawling in her sleep. Sorry I can't be more help.
@Kelsey yeah he does shuffle around with his bum in the air but he’s definitely not comfortable. Probably another regression hahaha!!
Could be teething