In all of my research, sleep consultations, etc, I understand baby sleep is "easiest" at the beginning of the night, and "hardest" the last third of the night (4am-7am).

What I think I've read is things like CIO are best for bedtime to teach baby to fall asleep on their own, but should NOT be used at all for say a 4:30am waking, since babies need a ton of help falling back asleep at that time of day.

So here's my question: what about other non-feeding wakings? LO decided to grace me with her presence last night at 11:30, 1:30, 3, 4:30 and then was up for the day. She only ate at 3 and at 5.

We've been "sleep training" for bedtime for over a week in the sense that I just put her down totally awake and let her work it out - she's been falling asleep with some fussing, a little crying, finds her thumb, and has never taken more than 20 mins to be out cold.

For say the 11:30 and 1:30am wakings, can we let her CIO (or whatever)? How does this work?

Please send coffee.