I am still usually surprised that C has fallen asleep for the night (keep expecting another nursing)... so he's not in a night diaper when he falls asleep (he's 2.5mo). So yes, I almost always change him before I go to sleep and at this point he sleeps through it. During the day he's a really light sleeper and noises, movement, etc wake him up. At night he sleeps much more deeply. At least so far. (crossing fingers...lol)