Is it okay that my 11 day old baby sleeps thru the night as long as I get up and pump every 3 hours or should I be waking her? I breastfeed

Sleeping. Your 11 day old baby should not be sleeping through the night, you should be feeding her every 2-3 hours with maximal interval at 4 hours. If she is not awake at 4 hours you should wake her to feed.