I joined this site a few months ago and often become turned off by the negative discouraging comments made by other. I agree we should be following the dr order as given but if someone falls off the diet berating them doesn't help. Pre and post sleeve is constant work and can be achieved dispute the progress. Some of us progress slower than others which is fine. Just remember to be honest with your team about you eating habits.
Mentally I thought I was ready for the surgery as I did the preop and everything to the letter. Although I was told what eating would be like after surgery my mind was not ready. In short you can still be successful with a sub par pre op, the real work begins after you are sleeved. Afterward many things change including your sense of taste, smell and more. You will crave the things that you once loved but they won't taste the same nor be accepted in your body the same.
Preop is about shrinking your liver so talk t your to and get there opinion first.