EBF refusing bottle

Kali
My 5 almost 6 month old daughter is EBF, but has taken a bottle of breast milk 2-3 times (when she was under 2 months). However, she now completely refuses the bottle she used to drink out of and every other brand bottle and nipple that I've tried. I need any kind of advice on getting her to take a bottle. We have tried only offering a bottle for the whole day, but she basically starved herself and screamed for hours; I felt so bad that I just had to nurse her. I tried offering a sippy cup, but she won't drink breast milk out of it, just water.