I think we'v hit it. DD slept through from 6 weeks to 19 weeks and then the dreaded 4 month regression hit. She hasn't slept through since but we were down to 1/2 wakings per night. But the last week or so has been awful - up 4/5 times. All my friend's babies are sleeping through so I am feeling like I am doing something wrong. She has always been a poor napper - max of 1.5 hours total per day - in 2 or 3 naps, often in buggy :-( Any survival stories/tips on this sleep regression?