If you don't want to eat, others can't force you. No one can help you if you want to eat. In fact, don't stick to these things when learning Buddhism. Abstinence is also a kind of persistence. But why say "quit"? Because many people are too persistent. For example, some people like meat, some people like wine, some people like color and so on. They couldn't bear it any longer and had to quit. If it's normal, it's good to eat a small amount if the body needs it. Just don't kill yourself.