What is the problem with the protein shakes? Can't keep them down? Have you thinned them with water. Mix1 is higher in sugar, but it's a thinner brand. Pure Protein is also a bit thinner. If it's been 3 days since your most recent fill and you still can't even take a thin liquid, i would talk to your doctor. Sounds like he/she is being more aggressive than most doctors. In my opinion too aggressive about fills but I'm not a doctor of course. Good luck!