If it were me, I'd be waking her to feed. She sounds like a sleepy bub and often this can create a vicious cycle with feeding. it is so tempting to let them sleep, especially if it is at night, but it can mess around with your supply. She should be feeding more than *just* 6 times a day because she may not be having fantastic feeds all the time to just be happy with that amount kwim? You might notice too that in another few days she is all of a sudden awake and becoming a lot more demanding for feeds too, but you should try to help that along by waking her to feed and feeding her every 3ish hours at this stage to encourage her to feed more if that makes sense.