C.B.
I went throught the same thing with my second child. I also nursed at night and let him sleep in bed with me and my husband out of convenience. Sometimes I would try to get him to sleep in his crib but he cried forever. I finally reached the same point as you and was getting back aches from sleeping around him and I was becoming a very grumpy mommy from lack of sleep. Eventually everyone started telling me the same thing....let them cry it out...babies at that age do not need to eat in the middle of the night they are just creatures of habit. It took about a week and boy did I feel like a bad mommy making him cry in his room. He cried for about 20 min-1 hour. But after the week he stated sleeping in his room all night. Hope this helps :)