As others have said, each surgeon is different and has different recommendations and requirements. The pre-op and post-op diets can vary WILDLY between doctors, but that doesn't necessarily mean one is better or worse than another. If you feel like you need additional support, its totally fine to consult with your PCP or a registered dietician, depending on what you need. The other thing to remember is that just because your doctor said you CAN, doesn't mean you HAVE to. You may be cleared to swim, but if you aren't comfortable, then don't. Maybe they say you are ready for the next food phase, but you feel like your body isn't? That's fine, go slower if you need to. The guidelines are just that, guidelines, they are not hard and fast rules for what you have to do at any given stage (although I certainly wouldn't condone going any faster or do more than recommended). Ultimately, you have to listen to your gut and do what you think is best for YOU!