Cry it out

danirose. • emilia belle 02.08.16 evangeline lee 08.28.20
I've been doing a little research since my midwife told me I should really start letting my baby cry it out. From what I've found so far online, this is only supposed to apply to bedtime. Is that the case? Or can the method also be used throughout the day? Also, anyone have any reputable book or website suggestions regarding this method?