Consider doing the pre op all liquid diet. I lost 15 lbs in 2 weeks and gives you training for post op. Google pre op liquid diet and meal and will show up.
I am 3 weeks out and I am SO happy to have had WLS but everyday is a true challenge. I for sure miss the big bowls of pasta and Asian food. But I also miss having a normal conversation where my weight loss, changes or surgery weren't ALWAYS the subject.