It’s so interesting how different surgeons are with their requirements! My pre op is completely different than friends who had it earlier this year. I wonder how surgeons choose what diets they require. What was yours?

I've been told mine will most likely be 2-3 protein shakes a day with a cup of veges if needed..

Mine was 1500 calories/day for two weeks

Ours was clear liquids only the day before surgery, and then a bowel prep/clean out in the afternoon. The doc who runs our support group now quite specifically doesn't want his patients doing any kind of multi-week fasting diet as he wants them as strong as possible going into surgery, and fasting doesn't do it. It's a big YMMV thing.

Our office bases it on your BMI-I am required to do a two week diet with 6-8 shakes per day. I am actually starting out with the plan for the BMI higher than mine which is 4 shakes and a low carb meal for two weeks and then the two week shake only diet. ( I am also adding veggies for snacks for the first week)
I have a LOT of bad habits and just thought it would be better to transition like this.

Mine provided me with the exact supplements and portions that I was to have for the 10 days prior to surgery. I was only allowed the things they gave me.

It was a protein shake at breakfast, lunch, and dinner (vanilla, chocolate, and strawberry), an protein-enhanced oatmeal packet at lunch and dehydrated protein soup (variety packets) for lunch and dinner. That was all I was allowed to have. Then the day before surgery only clear liquids.