My almost two-week-old will sometimes latch on, suck a couple of times and then pull off. She will do this several times. It usually happens at the beginning of a feeding when she is acting very hungry, but has also happened in the middle of a feeding. I've tried expressing a few drops of milk first, but that hasn't helped. Any ideas, this is causing nipple soreness, and I had just started to get over that. Thank you.