Dr. Smith is my Doc also. You're allowed to have the soup at anytime during the day. For me, I pretty much HAD to have it at lunch in order to feel pretty satisfied through the day. Also, you're allowed to add fruit and yogurt to your shakes - anything was allowed, except oatmeal. Use those recipes that came in your pre-op folder or make up your own. My personal favorite creations were the chocolate shake with a banana and about 6 cubes of ice, blenderized to a liquid. (I only allowed myself bananas every other day or two because of the high natural sugar content.) My second favorite was the vanilla shake with a Blueberry Chobani and some fresh blueberries and ice. That makes them a little tastier and more satisfying.
When I wasn't drinking a shake, I was drinking SOMETHING. Water, tea, V8, etc. Most days I was very content. I also got a calendar out and marked off each passing day. Just helped to have the visual for how far I'd come - I looked forward to my daily ritual of putting a big X across another day. Good luck! If you have any other ?? let me know. It's been a great experience with his office!