During the period of losing weight, there is a bottleneck period, some drop several times, and some will rise even if they don't drop at all. It doesn't matter. This is the self-regulation of the body. A normal body adapts to its own weight and suddenly loses weight. To a certain extent, it will give its body an adaptation process, so its weight will not drop in this process. As long as you exercise reasonably and eat reasonably, your weight will drop in the bottleneck period.