I think each doctor has their own little products they use and ideas. I think the whole point is for you to just lose some weight before surgery and that weight loss helps with shrinking the liver. My doctor uses the Bariatric Advantage brand and I actually seem to like it very much, but everyone's taste is different. The thing that helped me the most is looking up shake "recipes". One of the shake flavors I got is chocolate so sometimes in the morning I add a couple spoonfuls of Maxwell House sugar free french vanilla cappuccino and it makes it like a latte for me. There are lots of great tips and suggestions on how to make the shakes tolerable. So you don't get tired and bent out on the shakes my doctor prefers you to only have 2 shakes, a 4oz protein dinner with veggies, and for snacks in between you can have cheese sticks, apple slices with peanut butter, or their protein chips or bars. So I know you want to follow exactly what the doctor wants you to do, and maybe you can call them to see if there is something a little different you can do, but I just think the idea is getting you use to the shakes and losing some weight at the same time.