Have finally got DD (17weeks) to accept a bottle of EBM with a NUK teat (medium flow.) She is clearly not that comfortable though, and still refuses sometimes, and i am wondering if changing the flow might help. She is fully breastfed apart from this, and i have quite a fast let down (i think - nothing to compare it to!). Just wondering what flow other people with babes similar age use, and would a variable flow be better? Or is this just to be expected and will pass with time? Thanks!