Change from three meals a day to two meals. It should be harmful. Because the interval is too long. Especially in the morning. If there are two meals, maybe around nine o'clock. You should eat at two or three in the afternoon. But often two or three o'clock in the afternoon may be something. Dinner will be put off until five o'clock. This is not good for your health. Three meals a day is better, but you can eat less every meal and control your food intake.