I am so sorry you are struggling, but I would like to give you some advice. I had the VSG on March 17th, so I am 2 1/2 months post-op.
I am not sure why your doctor is giving you that type of advice when you only had your surgery less than a month ago. Sorry, I know all docs are different, but there is no way I was eating anything close to solids back then and especially NOT carbs!
You need protein, either in a powder that you mix or a ready to drink container. You need 80grams of protein a day, in order to feed the body. Which is about four protein drinks a day. In between you should have small amounts of yogurt, cottage cheese, creamy "no chunk" soup.
You didn't make a mistake, you just need a different approach to your nutrition. My doc had me on that for 8 weeks. Now I am on soft solids, shrimp, tuna, ground meats, chili from week 9-12.
I am doing fantastic, as of yesterday I have dropped more than 85 pounds. But you have to feed the body, the right stuff.
You can do this! Big hugs!