I think it's ok. I need to match my diet. I went four days before departure and lost eight pounds. Later, I lost weight slowly. I lost weight12kg after a course of treatment. The most important thing is that you can't eat and drink immediately after losing weight, and your diet should be slowly restored, otherwise it will definitely rebound. The human body also has a process of adaptation. I have lost weight for a month now, and my diet is normal, but not excessive. Brought back more than a kilo, well preserved.