Girls, hello! There's such a problem with my baby, almost a year old.…

Girls, hello! There's such a problem with my baby, almost a year old. For the past 5 days, he hasn't slept until 5-6 am, crying in his sleep, turning over, sleeping for 30-40 minutes. He wants to sleep but can't. He falls asleep before morning and sleeps like nothing happened. And during the day, he sleeps well, nothing bothers him. I don't know what to do anymore.