My son at the end of 2 months to beginning to 3 started sleeping 4 to 6 hours at night. But all of a sudden he went back to waking up every 2 hours at night and idk what happened. I think it was his formula cause my husband got the kind the he hated when was a newborn and that made him really colicky. Now he wakes up every two hours. He’s screaming at the top of his lungs before naps. Sometimes if we put him down cause we assume he’s sleeping , he instantly wakes back up.

I’m at a loss.