I think that Sue also had a good idea to make the funds available to another needy person, preferably a transplant candidate, if by some miracle you don't need a transplant.
I gave up cigarettes nearly 6 yrs. ago, and replaced them with ice cream and sweets for a long time. Then I got ascites and really blew up. At one point I was 135--5 lbs. more than I was at 9 mos. pregnant. I am only 5 ft., so that is a lot of weight for me. Once I was placed on Lasix, I dropped weight fast. I had always felt that a lot of it was fluid retention, but it wasn't until my feet and legs started swelling that I was given a diuretic. In addition, after my hernia surgeries, my tastes changed. I have been eating fresh fruit in place of sweets. Also fresh veggies and little meat. I lost 18 lbs. altogether, but gained a few back and am now trying to lose those. I can only blame it on eating too much of the good stuff, plus not getting enough exercise. about the only thing I can do with artificial hips is to walk. Lately, my rt. hip is giving me pain, so I'm still not able to walk much. All I can do is really watch my calorie intake.
It sounds like your doctor wants you to be as healthy as possible prior to surgery. Abdominal surgery is made more difficult if there is a lot of fat to cut through. It also elevates blood pressure. So look at your diet, and perhaps you can see ways that you can exchange certain foods for more healthful ones. When I get a sweet attack, I have sugar-free Jello with fresh strawberries sliced in it and topped with some light whipped topping. Fresh fruit usually does it for me, though.