Yup, the balance of your diet comes from fat, or from extra protein. You don't need to count calories or fat grams- but you may want to select lower fat (and thus lower calorie) stuff if you find that you're not losing weight quickly enough, or if your weight loss stalls.

For now, just focus on eating enough protein, don't go over with the carbs, and eat as much fat and extra protein as you need to feel full.