White noise helped and still helps my little one.

Try different methods to get him to go to sleep and stay asleep. Like when my 9m old went through it I gave him a late bottle, swaddled him, and held and rocked him for a while until he was really out and then I'd put him in bed next to me and he'd sleep though the night. That worked for me but no guarantee it will for you but you just have to try different things.