Me and DH are at our wits end with lack of sleep. DD is 10 days old, and although she is good at being put down to sleep in the daytime, she is like a different baby at night. At night she will only sleep if being held, even though she will happily lie and sleep in her bassinet in the day. We are trying to snooze in the day but it's really not practical or sustainable. Any tips or do we just need to give time for it to pass?