Have decided to get ds (16w) used to going to sleep by himself (has always been fed/cuddled and rocked to sleep) as well as sleeping in a baby sleeping bag instead of his swaddled blanket. So he is knackere, fed and changed and has nothing else wrong that I am aware of. I put him in his cot 25 minutes ago and I can still hear him whingeing - no crying just grizzling every now and then. Do I just leave him? Will he fall asleep by himself? What do I do if he doesn't? These all seem like ridiculous questions but I'm so used to our status quo that I don't know how to go about this!