Can anyone tell me how easy/hard it is to break a very bad sleep habits? DS is 9 months old now and still wakes at 4.00am every morning crying. The easiest way to get him back to sleep is to give him a bottle but I know he doesn't really need it. Sometimes he wakes more than once and am ashamed to say I give him formula every time. This morning his nappy was so full I could barely lift him out of his cot. Also my DD who is 2.4 is waking 2-3 times a night and calling for mummy. I go in and settle her, it usually only takes a few minutes, but I find it almost impossible to fall back to sleep quickly myself. I don't think I've had a full nights sleep since DS was born and I'm exhausted. Tonight I'm thinking of just leaving them to settle themselves and let them cry themselves back to sleep. Will this work and how long will it take? Advice please mums!!