Bedtime in our house is chaos. It’s everything the experts say it shouldn’t be. The girls have a nice, sedate story downstairs with their dad while I’m working. Then they both come bombing up the stairs giggling and it’s all down hill from there. Luckily, Libby is somewhat of a pro when it comes to sleeping. She started to sleep through the night at 8 weeks old and however chaotic bedtime is, she’s usually asleep within a couple of minutes of her head hitting the pillow. Lia is a different kettle of fish. Until she was 7 months old, she…