We have been trying to do EASY with our newborn (now two weeks old). Specifically, we are trying to do cluster feeding or "tanking her up" in the evening. She generally feeds every three hours with the last feed at 4pm then cluster feeds at 6 and 8 and a dream feed at 10:30. She is a great breastfeeder, but after her 4pm feed she is super sleepy and we can barely rouse her for feeds at 6 and 8. Is this normal?