How common is this? She eats very well during the day and is average weight, but top of the chart for height. She has snacks and enough protein. She has a 200 ml bottle before her 11 am nap. She then has tea at 5.30, a cracker and 300ml bottle at 7. She goes down fine but wakes anytime between 11- 2. She has a bottle and drains it. It takes her a while to settle again though.