I'm so sorry PZ. I know how wrecked you must feel

Unfortunately I can't offer advice, just support and more hugs. My DD slept through until 3 months, since then what you've described is a pretty standard night. Sometimes out of the blue she'd have a good night, and just recently she's gotten into a 3-hourly wake up thing. I have no idea how, or why, it's just randomly happened. I always feed her back to sleep unless it's obvious there's something else going on, as it's just not worth the hassle of trying to settle her any other way.

Her naps used to be shocking too, one good hour long sleep if I was lucky, or two short ones. That's only recently changed too. I don't know if she is getting more worn out now that she's very mobile and in daycare while I'm at work, or if she just grew out of it.

I can remember feeling the way you do quite a few times, and I think the only reason I don't anymore is because I somehow just accepted it. I'm used to very little sleep now. I also make sure DH helps on weekends and I nap for a couple of hours in the afternoon. I know your DH isn't living there, but could he come around and watch her while you rest and catch up?

Sorry I'm not much help, I hope someone has some good advice for you