He cries everytime my husband or I leave the room and has been sleeping absolutely awful for the past week. He wakes up trying to constantly grab onto me (we co sleep) and rolls all over me. I understand there is a regression/developmental leap at this age. Is there anything I can do to help him through this? He starts nursery very soon and I'm extremely worried as he was never like this before. He generally just seems unhappy and very quiet too.