I'm not sure if LO is having a hard time staying latched because my nipple isn't long enough or doesn't keep it's shape, but it seems like when she pulls off, it's flattened and almost slanted. She takes the whole thing in her mouth most of the time, but occasionally just takes the nipple and sorta chews on it. Is it supposed to be hard when they nurse or stay soft but sticking out a little? I have no idea how to ask that question and have it make sense! Hope it worked!