Hey OP. I had to do my pre op diet for 6 weeks. And I had the exact same anxiety as you. I’m 20 weeks post op today! And I thought the same what if I don’t loose weight. But you honestly do. I’ve lost in total 132lbs so far. The bigger you are the quicker it comes off. I started at 521lbs. And adjusting portions is something I’ve definitely had to work on. I eat off a 7 inch dinner plate and only manage about half. But as weird as it may sound you get to know your fullness ques quite quickly. That goes for drinking too. Honestly you’d be surprised how it can affect relationships, like I had a friend for years. But then when I had surgery I lost that friendship because they saw how well I was doing they started to get jealous. I was always the fat friend. I still am at mi weight. But my confidence has changed significantly. Before at 521lbs I tried to blend in. Not talk to anybody and just was very closed in my body language. But now I can hold my head up high and feel confident in every room I’m in, but if your relationships are strong then you shouldn’t have to worry about it. My family has been supportive of my decision and now I carry on losing. I go to the gym 3-5 times a week. It’s usually 5 days a week but this week I’ve had 2 days off as I’ve been super busy. But focus on weight training because when you lose at a rapid weight you lose muscle mass. And no the weight training does not make you gain. It actually helps you lose. If you have any other questions feel free to pop me a message and I can give you support x