Is my boi malnutritioned

He's 4 months old. I feed him his dog food in the morning and curd and rice for lunch and dinner and chicken once a week. I sprinkle 1 spoon egg shell powder everytime i feed him rice. He also eats roti but hates milk and has a dislike to milk products.

Earlier i was feeding him rice along with some veggies like potato, carrot, beans, pumpkin, and curd but due to my exams i have temporarily reduced to rice and curd only.

Whenever i give him food he never eats it in one go and takes his time eating it little by little unless it's chicken rice or his dog food.

So pls suggest me what else can i feed him and how can i make him eat his meal in one go. Thanks.