Tell him all your favorite flavors.
Tell him everything you hate to eat.
Tell him the most unacceptable food for you.
Tell him about your daily exercise.
Tell him your schedule, too.
Talk to him about your living habits and eating habits in detail.
In this way, you can eat as little as possible what you don't want to eat, and you are willing to have many dishes you like in your nutritious diet.
But I think, as a nutritionist, it should be how he wants to cooperate with you better, not how you cooperate with him better.
I think he should ask you all these questions.
I wish you a healthy and nutritious diet.