Changing lifestyle from low carb to keto. 480lb starting weight

Changing lifestyle from low carb to keto. Decided I needed to use mfp to meet my daily goals. I'm from Carthage, TN. Married no kids. Current weight is 480lbs so I got a long haul to get to goal weight. Recently diagnosed with diabetes. I also have high blood pressure and major back and leg pain. Needless to say, I want my health back. Since November I've been in so much pain, I've had to be in bed too much and using a walker. Doctor wants me to have weight loss surgery. Although I might have surgery I'm starting to once again try to lose weight on my own because the process is very long.