My husband was not eligible for the Whipple and has survived for exactly one year. He and I know that he probably only had days or a few weeks left to live in this planet. We are both at peace. But I wanted to tell you about Katefarms Standard Sole-Source Nutrition Formula, 455 calories. These are like milk shakes, chocolate or vanilla, full nutrition drinks. These shakes were for a very long time the only thing my husband could eat/drink. Give it a try. You can order on line. We had a case of 12 delivered every week for months. They are expensive but, I think, worth it