He just doesnt eat 😞

No matter what I offer him he just doesnt want to eat or be fed. All he does eat is apples and rice. But it is not enough to get him full. Every breakfast, lunch, snack and dinner takes up to 45 min to one hour but he playes more than he really eats. Please help because at night and also during the day he is fuzzy. His sleep is short and interrupted because he is hungry. And during the day he is fuzzy because he is hungry. I try loads of different options. Food I cook myself, I buy some baby food, I make him porridge, trying different yoghurts but nothing he eats. Please help me out