If you follow your plan, you won’t put on weight. You are consuming so few calories & even when you progress to purées, soft food & then solid food, you’ll still be eating so few calories & such tiny portions, that again you won’t put on weight.
Not consuming calories, not meeting your protein goals (or at least being close to it) will actually be doing you more harm. Affecting your recovery & healing, putting your body into starvation mode, being nutrient deficit, etc. These will impede your long term health & weight loss.
May be get in touch with your team & ask if you could see a therapist to work through this fear of eating. You don’t want to swap one set of poor eating habits with another & create new health issues.
Trust the program. It works.