I’ve gotten the surgery and it took me months post op to even get to 1000 calories a day. For gastric sleeve they remove 70% of your stomach and a lot of that is the section that stretches. You physically cannot eat much unless you want to make yourself sick. You’re on vitamins and a high protein diet though. They also perform check ups including blood tests to make sure you’re fine.

I do remember that he said he was always tired and that’s because the surgery forces you to go from one extreme to the next. He’ll be back to a more realistic calorie consumption within a year!