2 month old, sleep getting WORSE instead of better?

If she is not hungry, then she is developing a habit. When you allow her to nurse every time she demands it, she will begin to develop the habit of waking at a certain time. It IS normal for a little one to become hungry during growth times, so feed her the first time she wakes, and then you are going to have to allow her to cry herself back to sleep when she wants to nurse after being fed. It is not easy to lay in bed and listen to their cries... but even at this young age, they are developing habits. Unless she is sick, or hungry, this is your option.