Regarding the meal plan, it says to choose three of each meal. Do you stick to only those three from each group for the 12 weeks?

We recommend choosing 3 breakfast, lunch, and dinner options because limiting meal variety is a proven method to help you lose weight. This is because you don’t have to think too hard about what you’re going to eat for breakfast, lunch, or dinner. You also know what and how much you’re eating. However, feel free to eat any of the recommended meals. They are all structured to meet your caloric- and nutrient-needs, ensuring you maintain lean muscle while losing body fat.

You can also modify the existing meals, or create your own, by substituting equivalent amounts of different proteins, vegetables, carbohydrates, fruits, fats, etc.