sleep coach
n.— «The magic of the sleep coach is that they have no emotional attachment to your child. They can come in and simply ignore the crying guilt-free. And that’s what your money gets you. You are paying someone to bear the burden of your guilt so you can swoop in like a hero in the morning, well rested and cheery.» —“Sleepless in NYC” by Margaret Harper Gothamist (New York City) Mar. 7, 2007. (source: Double-Tongued Dictionary)