DS is 21mths. We do a nice gentle bedtime routine - tea, gentle play, bath, stories, etc. Put him in his cot by 7.30pm and he's happy to be there and very obviously tired, but then it can take up to two hours for him to drop off - never less than forty minutes. (Think bouncing, talking to bears, rolling around, nattering to himself..)
Once asleep, he then wakes on average once a night, but sometimes (rarely!) sleeps through. He sleeps for 11/12 hours though, which is good. Still sleeps during the day, but only for 40 minutes and never later than 2pm. Am baffled - he's so obviously tired, but just won't seem to settle. Has anyone else had this?