Beck, classic (well, not so classic) but this is EXACTLY what happened to me at the beginning, and I posted here (about 10 times!!!). Sounds like Coco has VERY similar patterns to Maddy!! It's 4 weeks for us tomorrow (OH MY GOODNESS) and we have no pattern still, but Im starting to know what's going on I guess. I have realised that if I put Coco down at night and she wakes up, I just have to keep feeding her (may be for one minute) and until she stays asleep. This usually takes 2 or 3 attempts. Its' not so bad as I've given her her big feed, so it's only comfort sucking, but it doesn't take long and gives us peace after she does settle.
Then during the night I will feed and if she won't settle in her cot, she sleeps with me in bed. She has slept in our bed every night from birth sometimes from midnight, sometimes earlier sometimes later.
As for the day, we have a couple of sleeps for 2-3 hours, but she may wake up and I have to pat her to sleep again. other than that, she loves being awake!!!
Gotta run, I can hear her stirring! ox