I just found it quite extreme that Margot went from having one of them lie with her until she fell asleep to the next night being left in her cot alone to cry for over an hour until she eventually fell asleep. I just think there are a few ways to transition it a bit less harshly? She was only 5 and a half months old at the time. I think sleep training can do the world of good but I think she took cry it out a bit too literally