I had to use a modified sleep approach with my son. He was waking up once a night, and would not go back to sleep without a bottle. At 15 months I had had enough!! (I was a single mommy at that time, and needed all the rest I could get). So, when he woke up for the bottle at 2, I let him cry himself back to sleep. It took 30 minutes or so, yes, I felt evil, but eventually, the sweet sound of silence. He woke up about two hours later, cried for about 5 minutes, and was out again. The second night he woke up once, cried for about five minutes, and TA DA! A little bug that sleeps through the night. If only I had done that at six months. He was moved into a "Big Boy" bed about two weeks ago, and let me tell you, there are a whole new series of challenges now. Like finding a little guy sitting at the kitchen table, very nonchalant at 10:30 pm sipping on his mommy's 32 oz mountain dew. That prompted a kid proof handle on the inside of his bedroom door, and SHUTTING his door for the first time ever. Now he jumps out of bed as soon as you put him in, runs to the door and screams "Momma, Momma, SNUGGLES!!" for about 30 minutes. And this will be repeated EACH time you put him back in bed. So my solution? Let him cry that out too. So far it is not working too well... I think he is sleeping on the floor in front of his door now.