I'm in desperate need of help. My son is 19 months old and about 5 weeks ago when going down to bed he has started screaming and screaming!! Not just for 30 mins but for 2-3 hours. I go in there say it's okay, then leave still screaming. Put a night light, leave his door open. Still screaming. Then he wakes up at like 2:00am and star the screaming thing all over again!! ive tried laying on the floor until he falls asleep. I'm exhausted I need help please!!!