Mamiof3kids and bbdoodle are exactly right with everything they've said. The more control you get now the better you will be. It's going to be hard but it's worth it. When I was pre op, I printed pictures of myself and put them all around my house. One in my car and one in my wallet. I was seeing myself as I was and I hated it. Made me do what I needed to get into the mindset I needed.
I had 12 days from the time my surgery was approved to the day I had surgery and Thanksgiving was 4 days prior to my surgery. While everyone was having a huge Thanksgiving feast...I was having a 1/2 c of applesauce and a cheese stick. I had 3 Thanksgiving and did that all 3 times. That will give you some will power!!!!
Carry Protein mixes with you, Protein Bars, low calorie Snacks, nuts, Jerky....this will all help.
Start to measure your food, chew 30-40 times, don't drink while you eat and your recommended minutes before and after, and exercise as much as you can. If you get used to this now and keep at it no matter what, this will be so much easier on you. Make time to exercise....put it in your schedule and stick with it.
I wish each of you good luck with your surgeries and your pre op diets. This will not be easy but the more you prepare yourself the better it will be. One last piece of advice....read the posts in the post op section. You will learn a lot from real people and their experiences. I wish I would have.
HW: 331 SW: 11/26/12 319lbs CW: 225 05/03/13 GW: 157