First off, at 2 weeks out, "food" is really just liquids. You may or may not feel full by loading up on the shakes, but that is pretty inconsequential this early on. Protein, hydration, and Vitamins, and walking. THOSE are the important things.
Your stomach will continue healing for at least the first 8-9 weeks. That's why solid food doesn't start until then. (Soft foods that go down in the consistency of applesauce really aren't "solid", are they!) The feeling of solid food pressing against the sides of the stomach are what will make you feel full, but that can't happen during the initial period.
I can't advise you to go against your Doctor, but perhaps you can speak with him/her, and get some clarification on the issue. If the concern is you feeling hungry, then that doesn't seem like a huge concern... particularly if it is keeping you from meeting the requirements.
Oh, and the unflavored Protein powders can be added to Soups and the like. They need to be mixed with a liquid, not consumed dry.
It takes time... make sure you're walking and drinking lots of Water. I hit a Plateau at 3 weeks and became frustrated but just kept chugging ahead and finally started loosing again. Keep the faith it will work! YOU CAN DO THIS!!
Anytime! Best of luck on your new journey!!
I also just sprinkle the Protein powder on my meals. It works great and it doesn't taste any different! Such an easy way to get more Protein into your diet!
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