Low carb and calorie deficit

I need suggestions and ideas for a meal plan for my son He doesn't eat vegetables much and goes to the gym 6 times a week to workout. Mejo mabilis maubos laman ng freezer being carnivore sya, sila ng dad nya. Once every 2 weeks kami naggrocery to buy frozen meats. He's abstaining from coldcuts and eating less rice sugat and bread, more on eggs and meat, white meat and fish. Ako nahihirapan mag isip ng kakainin nya. Any suggestion will help po. TIA