Ask someone how I should talk to my boss. A month ago, he talked to me once, saying that he would see me in a few days and talk about my relationship of becoming a full member.

Since it matters, the best way is to let that person talk to the boss. Secondly, let that person find an opportunity to invite you to dinner with the boss and talk face to face. Finally, find an excuse (such as work) to talk business with the boss. Finally, by the way, about becoming a regular employee. After all, the boss told you before, it is normal to ask. Maybe the boss forgot? What I fear most is that he won't do it for you, because that person has problems, or because your work is not good or the company can't give you a regular job for the time being or even consider dismissing you. He is dragging his feet because his relationship with that person is not clear. In any case, it's better to ask as soon as possible, whether through related people or yourself!