How Do I Know If It's Working?
Intermittent fasting allows you to tap into the fat stores you have built up. One way to know this is happening is if you weigh yourself throughout your IF journey. Be aware that working out can cause muscle gain, which will actually show numbers increasing on the scale, so also be sure to take measurements and progress pics. The numbers won't mean a thing if your before-and-after photos prove IF is working.
Since weight loss isn't the only benefit of IF, also take note of how you feel. Do you have more energy, a clearer mind, better digestion, and are you sleeping better? Do you feel more in control of your eating habits and your cravings? Do you have a lightness about you, do you feel happier? Write all this down in a journal so you can look back and determine if intermittent fasting is working for you.