I know that story about the sleepy and won't feed thing. At this early stage frequent feeds are best for your supply. I would be waking her if she goes any longer than 3-4 hours. Some women won't & that's all cool - but I would for manily supply reasons. When your supply is established it is fine. Don't wake her 3 hourly overnight though - your sleep is important so sleep away if she is at night.

This tme will pass when she is feeding so all over the shop - you can gradually coax her to feed the older she gets the less sleepy she will be.