So surprised!

My little one is not sleeping through the night anymore! Omg I thought I was so lucky my son started sleeping through the night since he was a month old and now I feel like once he turned 3 months it just stopped he’s 14w6d now and still going through this sleep regression. It’s 3:12am and I’m currently holding him because that’s the only way he sleeps now every time I try to put him down he wakes up all over again. Anyone have any advice for this?