For me it was impossible to let my daughter crying and wanted to allow it to be autonomous quickly.
Today she is 4 and a half months and it makes almost one month she falls asleep alone in bed without crying !!!
I pretty much followed all recommendations. The early start probably played but it's never too late to start good habits hanging.
I clearly recommend this book to all moms who want to accompany their (s) child to sleep calmer manner. Needless to force things when you can do them gently ...
This also helps to get out of bêtifiantes and guilt-inducing thoughts we hear all the time: "you ought to (the) let her cry", "you try to make long weeping sessions to teach him to calm down only ( e) "," care she (he) will be unpredictable if you do (it) not let cry "etc.
WELL IF !!! It is possible to accompany her child reassuringly without having to let him cry.
We know we have reason to follow our instinct because it works !!
What silence lecturing once and for all !!!