My biggest headache with Avery sleeping at night wasn't her waking up, but getting her back to sleep! She would eat, go to sleep, and the second I put her down in her cradle, she'd be awake. Even when I swaddled her as best I could, she would somehow wiggle herself out of it in no time.
So the other night I remembered that I had a Halo sleep sack that lovely Nicole had given me and I hadn't even tried it out yet! I wrapped Avery up and for 4 nights in a row I've had no problems getting her back to sleep. It's a miracle! Now I just need like 5 more of these so I don't have to wash it all the time.