You've been given some great advice, so I'm not going to repeat all of it. Except the congratulations - such great, healthy weights!! You're AMAZING!
Just DON'T be hard on yourself. No matter how this turns out (you work through the BFing issues, stop altogether, or do a combination), you have nothing to feel bad about. Twins are rough. And until you've been there, you really just have no idea.
Try some of the tips you've been given, and if you make it work, great. But if you don't...seriously honey, it doesn't make you a bad mom. And if nursing is making an already stressful situation unbearable, it's not worth it. Don't let this define your relationship with your babies.
Stacy
Wife to K
Mommy to A (5) and twins E & S (1.5)
The biggest mistake I made is the one that most of us make...I did not live in the moment enough. I wish I had not been in such a hurry to get on to the next thing: dinner, bath, book bed. I wish I had treasured the doing a little more and the getting it done a little less. - Anna Quindlen