Start with a lunch you already enjoy. Rice, dal, and a vegetable dish are an easy place to begin. You can use roti instead of rice, or choose another pulse you have at home.
For a simple version, cook your usual dal and serve it with rice and a seasonal vegetable sabzi. Add curd if you enjoy it. Choose portions that suit your appetite and any advice in your personal meal plan.
Keep the idea flexible. Leftover vegetables, a different dal, or a favourite family recipe can all make this meal your own.