Awwww Meg....I'm sorry to hear that Coco won't settle for you. I truly hope that it's just a super-short 'stage' and she goes back into a nice settling pattern for you soon.

Wish I had some suggestions; but every bub is different so what works for Maddy definately won't necessarily work for any other bubby. It's good that you're trying to rule out the 'easy' reasons first to do with food/drink.

A big thing for settling Maddy during the day is that she gets put in her cot, I tuck in a light wrap over her, kiss her on her forehead and say 'Mummy loves you and I'll see you when you wake up from your nap' and then turn her lights'n'sounds toy. She knows then (and certainly doesn't appreciate it) that Mummy means it and it's time for a sleep.