My first three were great sleepers - sleeping 12hrs by 6-8wks old. And then we had number 4. The Reverse Karma God is kicking our butts big time as I think we've probably only had about 6mths worth of sleeping through on and off over the past 22mths. it is causing a lot of issues between DH and I and I don't think he realises just how great we had it with the older 3 and can't accept that some kids just DON'T sleep through or go to bed easily.