First of all, he may see his roommate, and his classmates are wasting time playing games every day, or their minds are not at all on their studies, so in his cognition, college is a place where time is wasted. Then at this time, you need to guide him well. You can say that society is cruel and competitive. Moreover, you can also let him do odd jobs properly in summer vacation or winter vacation, experience the warmth and coldness of society, and let him feel the survival law of society. He naturally feels how happy the school is and how important the experience is.
In addition, it is also possible that he is not interested in learning. Or he thinks the courses in the university are too difficult for him to keep up with, and he is afraid of failing the final exam. Then I am afraid that I will not graduate after graduation, which will make me embarrassed and even make me afraid that I have failed my parents. This situation actually exists, because college courses are really a bit difficult, and many students can't keep up with their thinking. If they fail in the final exam, they will think that college is too difficult, and then find an excuse to say that college is useless and I don't want to study. Actually, I'm looking for steps for myself.
Then you should encourage him to study hard at this time and don't think about anything else. Study hard in daily class and arrange your time reasonably. Believe in yourself, I am the strongest and most powerful. Add some light to ta's life.
After entering the university, the "three views" have basically taken shape. In fact, he has understood the importance of going to college. Maybe there is something wrong with his thought, so he should choose an acceptable educational way to do his ideological work. It is best to choose relatives, friends or classmates who can talk to him, so that he can accept it more easily.