My 6 week baby has just stopped sleeping on her own. She's never been great but could do 2 hour stints a couple of times a night. Now she won't go longer than 50 mins and most times won't go down no matter when we try. She isnt hungry, dirty etc. The room is a good temperature. We've tried swaddled and unswaddled. I just need to know this will pass. I had 40 mins sleep last night and I'm struggling.