I am at a loss. My daughter has generally slept OK at night (except for early rising most days). Over the past month she has started to cry in her sleep, but remains sleeping. I thought at first it may be due to a cold and it would pass, but it is still going on a month later with no signs of stopping. She never wakes during the crying but it can be prolonged and happens 4-5 times a night now. I am exhausted. We have no idea why it’s happening. She’s well in herself during the day, have tried an extra layer in case she was cold, have tried going back to just formula before bed as we had started to introduce cows milk. Nothing makes a difference. Has anyone else been through this?!