So we decided to start Ferberizing after weeks of LO sleeping worse and worse. He went from being a very good sleeper to waking up multiple times an hour, and I was going crazy.
Night one: I played him down and he started crying right away. Went to soothe him at 3, 5, and 10 minutes. Before another 10 minutes could pass, he was asleep. He woke once in the night and I fed him and laid him back down, and he went back to sleep and slept the rest of the night.
Last night: I laid him in his crib and he went straight to sleep. He woke up about 2 hours later. I went in after 5 minutes and he fell asleep 2 minutes after that. Then he STTN.
I really didn't think I could let him CIO at all, but I think overall there has actually been less crying than usual. I certainly think he is happier being able to wake up and put himself to sleep than he was when he needed to be rocked and shushed each time.
Sorry for the AW post. I know some of yoy may be considering trying something like this, and the difference that I can see after just two nights is amazing.