As the title of this post states, my 5 week old suddenly overnight stopped sleeping during the day. She went from having about 3 two hour naps in the day to not being able to stay asleep for more than anywhere from 2 minutes to a half hour (a few times she has slept for an hour and once for two ) over the last three days. It is continuing again today. We can get her to fall asleep but not stay asleep (she falls asleep in my arms). Surprisingly, she sleeps pretty well at night.

I have no idea what is going on. After reading online, it's either a sleep regression or perhaps a wonder week (the Week 5 one, although is that stuff real?). Maybe it's reflux? I don't know. I am worried because she's not getting much rest, and I hope it's not affecting her development.

I don't know if this is the new normal that I should accept, if there is something I can do, or if this will just pass. We are now on day 4.

Any insight would be helpful. Thanks.