How to Track Your Progress
One way to know you're losing weight is if you weigh yourself throughout your IF journey. Maybe weighing yourself every day will help you stay accountable, or you may prefer weighing yourself a couple times a week or once a week. Your weight can fluctuate from day to day, so as long as your weight is trending down, you can stick with your plan.
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, and 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 because you finally feel free from restrictive diets? 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.