Hello everyone! I don't know anymore how to deal with my son's terribl…

Hello everyone! I don't know anymore how to deal with my son's terrible behavior. He categorically refuses to do anything. He can't manage to go out, eat, or take care of himself. He claims he is little and therefore I should feed him. If I don't feed him, a two-hour tantrum is guaranteed. Almost anything I ask him to do immediately results in a tantrum. He used to sleep during walks, but now he doesn't want to go outside at all. If we do go out, within five minutes he starts saying, "Walking is too long, I don't want to, let's go home." He can't ask for anything without starting to scream right away. He wasn't like this before. And my husband and I never spoiled him; we always explained everything calmly. Now he doesn't even want to eat; he barely eats anything at all. Has anyone else gone through this phase? When will it end, and what comes next? ??