I certainly sympathize with you and your struggles. When I had my first dietician appointment post op I was told that I hadn't lost enough and needed to cut back to between 300 and 400 calories. It was quite depressing. However, my bariatician said I was doing fine, as did my surgeon this week. They both told me to expect to lose 1 to 2 pounds a week. To me that doesn't seem fast enough and that I lost at a quicker pace before the surgery. My surgeon told me that I can do 500 to 600 calories per day and to make sure I get at least 50 g of protein. That is what I aim for right now until I am told otherwise. It isn't easy because I get cravings all the time. Sugar free jello helps, as do almonds.
Be happy and proud with what you have accomplished. WLS is hard work and you are doing it!