Five week old DS goes to bed pretty happily at 7.30 after bath and feed and has his longest sleep following this (still only 3-4 hours, although he once went 6). Then wakes up every hour of so until 4. The only way to get him to sleep after 4 is to let him sleep on me on the sofa bed. If I give in and let him do this we both get another 2.5 to 3 hours so he clearly is still sleepy, just won't settle in the cot. The extra sleep is pretty crucial to me getting through the day, but I'm worried I'm creating a bad habit that we will struggle to break. Anyone know when babies start to develop bad habits? He clearly has sleep associations already bearing in mind the success of the bedtime ritual.