Hi! My two year old son is so attached to his bottle. He can drink from a glass and he eats cheese, crackers, fruits, soup and fish with rice for meals

but when he is sleepy or very thirsty after playing he still asks for his bottle. I dilute it to one scoop is to 7 ounces of water and he does not refuse it. When I try to give him a glass or snack instead he throws a tantrum. I think he’s attached to the bottle and not entirely dependent on the milk.