Why is my baby waking up at the end of a night feed, properly awake, rather than drifting straight back to sleep on the boob and staying asleep? My first would stir, feed and sleep multiple times over across the night granted,but would stay asleep. My second stirs, feeds and is awake for a couple of hours. It's ridiculous. Why isn't my breastmilk knocking baby out with sleep hormones like it's supposed to?!!??