Hey rdt - I'm not a trained medical specialist but I'm not sure if I need to be one to at least share some observations about your situation with you. 1) Your family situation doesn't sound so ideal right now - your dad asking why you can't do this w/o the surgery indicates to me that he is still unclear about what the surgery is meant to be - a last resort for people who have spent many years dealing with weight-related illnesses and diseases. If you were suffering from Type-II diabetes, high blood pressure, sleep apnea, lower-back sciatica, or whatever and the doctors said: well, this lap-band surgery will be a step in the direction of healing, I'm sure it would help him see the light about what the surgery is for.
2) If you are still sneaking food and you're supposed to get this surgery on 11/20 (which is when my date is) then I'd request from your PCP some additional visits to a nutritional psychologist, someone who can help you address the underlying issues that have been driving you to do that to yourself. When I started this process 4 months ago, I just saw all the visits to the nutritionist and the psych. eval. stupid hoops I had to jump through to satisfy my HMO. But I've lost 10 lbs in the process, and actually changed my eating behaviour (which included a lot of mindless snacking). Even if you could address the sneaking food part successfully, I think it would be a huge step forward in preparation for the surgery.
3) Finally, as for your sisters - I'm sorry, but I think their "concerns" are quite transparently self-motivated. Maybe they're thin, maybe they're overweight too - whatever it is, I really really don't think how other people will react when you have a small portion of food is a valid "concern". What I'm starting to realise is that for some people around us, even family members, our being obese sometimes acts like a security blanket for them - they may not be aware of it, but knowing they can count on you to fix a huge meal and to overeat with them when they're feeling low is something that maybe they can't handle?
Well, I hope these observations helped - I can't say I know exactly what you are going through b/c we're about 15 years apart in age, but I do remember my early 20s and I wasn't as overweight as I am today and I still had a lot of issues to deal with :rolleyes2:. Good luck to you - have faith in yourself!
kathleen