This hospitality is really unbearable. Please accept it. Whether it is personal hygiene or dietary preference, it is difficult for yourself. Do not accept. People's "kindness" makes others embarrassed and gives you advice. Now that the food has been put in your bowl, show that you are full and can't eat any more, and let people know that you are a small eater and don't need other people's "care". Then try not to sit with him next time, or eat quickly, and don't give others a chance to give you leftovers.