As for me, I don't have any sleepless night. Probably coz I'm so exhausted during the day that I still get a good night sleep even if little baby asks for some milk in the middle of the night. And he's a good boy too coz the moment that he's finished and burps, he fells asleep afterwards! My hubby being able to wake up easily when baby cries is also a great help. Yes, that's teamwork!