With my first, I forgot some stuff, but we lived close enough for my husband to pick up what I needed.
With my second, I had advance notice that I might have to transfer, so I made a list and then packed when I went into labour.
Definitely bad advice. I've nursed minutes after general anaesthesia twice. Once after hernia surgery with my son, and after my c/s with my daughter. Any antibiotics and painkillers will either be bf safe or have a safe alternative.