DD is 5 weeks old, the last few nights she's kept from 11pm til 6.30 with only one waking, when she's not really fed much but needed a nappy change. Am I lucky to have. Good sleeper or should I be worried? During the day she feeds much more and spends lots of time awake but does also sleep, often not more than 2 hours at a time though. What do you think? Am I being overly concerned?!