It is difficult to persist for a long time without eating staple food, and people are easily unhappy. If it is intermittent, it is easy to increase or decrease the weight repeatedly, like a yo-yo, which will damage your health and be worse than being fat all the time.
To lose weight healthily, we need to reduce fat, add sugar, sweets and refined rice flour, instead of rejecting staple food blindly.
A simple method is recommended to everyone: add some miscellaneous beans and potatoes to rice, or add whole wheat flour, oats, buckwheat and other coarse grains to flour.
This will not only improve satiety, but also reduce the total calories you consume. For most people, this is a good way to really lose weight and control it.