I have an 8 months old baby. He is incredible, but not so good with sleeping he may wake up 4-5 times at night to be fed. When he was 4 months old I sleep trained him but I just could not Continue on doing it. This crying thing really hurts my baby. I though to myself it's his only way to communicate with me and I am preventing that because of some sleep I am missing. I have been sleeping my whole life, and he is worth so much more than sleep. I passed by this article taking about how the cry it out method is totally wrong for our babies ( https://www.askdrsears.com/topics/health-concerns/fussy-baby/letting-baby-cry-it-out-yes-no ) . We love them, we should listen! It starts now ! Listen to your baby so he can grow up communicate with you.