On the two week "liquid preparation" stage to advance to "flakey foods". Never thought the water hydration thing would be a challenge. Had to get a nalgene water bottle with actual measurements. The biggest challenge I guess is staying positive. It is helpful to connect with others that are going through the experience. For some reason just feeling flat... My doctor warned me about this. With the weight loss and changes, there would be fluctuations in hormones. Also my family piece. I'm not sitting at the dinner table with them or having meals. Its weird. But I am cooking them. Cooking food I am not eating is strange. With the protein those shakes from Costco are helping me. They have 30 of protein and 5 carbs per shake. So two a day and I am good.