In the past I would say 4 days, Cecilia's sleep has changed. Previously, she slept around 8-9 hours a night and napped anywhere from 6-8 hours a day, often taking one 3-4 hour nap and a couple of smaller ones.
Since the beginning of the week, she has gone down to sleeping 6-7 hours a night, by virtue of staying up until 10-ish rather than going down at 8 or 8:30. She still gets up around 5, sometimes earlier, like 4, though. And her daytime naps are all over the place. Today she did a couple of 3 hour naps again (the first one was with me, from 6:15-9:15 am, the second was her afternoon nap, but in between was one half hour nap) but all the rest have been 45 minutes to 1.5 hours, or one to two sleep cycles.
I'm trying to figure out the cause of it. I don't think she wants to go down to two naps instead of three yet, because she still can't be awake for more than two hours at a time without losing it. So that brings me to either teething or a growth spurt (or both). For frame of reference, she is 5.5 months/22.5 weeks, but for weekly stuff she is generally considered to be 2 weeks behind since she was born 2 weeks early. So that would adjust her down to 20.5 weeks, which puts her in the timeframe of the 19 week leap on The Wonder Weeks. By the way, The Wonder Weeks book is amazing for helping you figure out times when babies are making mental leaps that are affecting their behaviour, since you can't really see those leaps like you can physical ones).
So those of you who have been there, done that, any advice or anecdotes?
Because I can't resist adding an adorable picture, here's Miss Sassy herself: