Hi, and welcome to the boards. It is a wonderful place to get support and information. It's so nice to have someone at every stage of the process to help you out and answer questions if you have them and to encourage you when you're feeling down or worried. Good luck with your 12 lbs. You can do it! I'm in the process of losing a few pounds for my surgery also. My nutritionist didn't give me a specific diet, she said to use whatever works for me, so I'm substituting 2 meals a day with the protein shakes we'll be drinking post-op and having a low carb meal for my one meal a day. So far, it's working well for me. You will do great. Good luck and keep us posted.
-Jenny