My DS is 13weeks and since 7weeks has slept through from 1030pm until 7/8am. He is nursed to sleep and only has short naps in the day. The last few nights he has gotten grumpy around 8/8.30am and wanted his bedtime feed early. I am wondering if he might want to sleep earlier and what consequences this will have on his total duration of sleep. I know some toddlers sleep 12hours or so and wonder how this pattern is established. Currently we try and keep him entertained between 7.30pm and bedtime so as to keep him awake hoping for him to sleep through the night as he does.