Many people are still in a period when they don't understand their career development direction, especially in school and their parents' days. They feel that they have no enthusiasm for anything, and they may be far away from the real society and refuse to communicate their feelings, so that they can be more real.
It's hard for adults to refuse to communicate. Don't communicate blindly in the tone of elders or in an educational way.
A better way is to communicate with him when he is in a particularly good mood, the plan for the past three months; It is natural to get in touch with people of the same age who have a good relationship, such as his cousin, to see if he is too closed to others.
Try to explore his professional values and outlook on life, and what he would be like if his parents gave him a job.
Starting from interest, I like games, starting from talking about professional e-sportsmen, game product design, game trainers, live games, etc. And try to expand his other interests by talking about other children's various occupations.