DD is 16.5 months and usually bedtime is easy. I put her in her crib and walk out of the room and she falls asleep on her own within a few minutes. The past week this suddenly changed. Right when I walk out of the room she starts screaming and crying. I let her cry for about 15 minutes and then go check on her. Right when I leave she starts screaming again. She wants to be rocked and held to sleep. Omg it's like the baby stage all over again! Do I need to sleep train again?! Noooooo! This happen to anyone else? Please tell me it's a short phase!