We used a combination of a sleep spray from Healing Hippo (I don't know if they still exist, but you can get one from Body Shop too) and Brauers Calm. It was just enough to help Z get to sleep & stay relatively calm overnight.

The other thing I can think of is seperation anxiety, I think J is going through it at the moment. When we are in her room, even if not holding her she is fine, but the second we leave she screams. Not sure what to do about that yet.

Otherwise, no idea hun, just lots of hugs. It's only been in the last six weeks that Z (at 4.5 years) has started sleeping all night.