You might lose a bit of weight by doing it but as soon as you eat, you will put more weight back on. It is also very unhealthy and not a thing you wanna start doing. The best way to lose weight is drink more water, eat little but often, reduce refined carbs, when you do eat carbs eat wholemeal, they keep you fuller for longer and it’s healthier than white. M I would also suggest having a high protein diet and you can also eat healthy fats, now I know this sounds bad but Olive oil, coconut oil, avocados, nuts and seeds are just a few examples of healthy types of fat
that may have beneficial effects on fat burning. And of course exercise, doing cardio helps weight loss.