Hi Rivoluzione,
Any time that you take alli with a meal that contains fat you will save calories. If you are only consuming a couple of grams of fat in the meal you don't need to take alli with it. Your weight loss is going to come from consuming fewer calories than your body needs to maintain its weight. As long as you are sticking to your calorie plan, and taking alli as instructed, you will lose weight. It sounds like you are doing the right thing by taking it twice a day right now.
Good luck with your check in,
Betty Kovacs, MS, RD