Baby isn't here yet, due Jan. But I remember being told by the midwife with my first 7 years ago that I couldn't feed formula and breast milk, it had to be either one or the other and couldn't supplement formula with breast. He struggled with latching so I tried pumping but wasn't able to produce, but hoping this time round I'd be able to. Just curious as to how true it was that you can't feed breast milk and formula. She also said that once you start using a bottle their mouths form differently from it so they can't feed on the breast, is this true also? Thank you in advance 