Baby Marthas mostly on breast milk now since i got the new pump yesterday, but she still eats formula when mommy doesnt wake up in time to pump for her in the middle of the night. Hopefully the lactation consultants can help her latch later on this week or next week. They said the reason why she doesnt fully latch and seems to get irratated with them right now is bc her muscles arent developed enough to suckle and latch properly. They said to give her a few weeks, and it should get better the closer she gets to when she wouldve been full term.