I've done both extended (more than two weeks) and intermittent fasting over the past few years. For me it was easier and healthier to go on extended fasts than it was to simply skip meals intermittently. It takes time (24-72 hours) for the body to switch over to a ketogenic state and start burning fat for fuel. With very short fasts there's a good possibility that your weight loss is simply water weight or muscle loss.
But hey, if it's working for you and you can manage it, go for it. But I recommend using an advanced scale that measures your body mass accurately and tracks percentages of fat, muscle, water (hydration), and bone. You should track it all to see how your body is REALLY reacting to a fast.