In addition to understanding his personality through chatting, it is mainly to correctly analyze his learning situation. To tell the truth, if the score of 60 points is not accidental, it may be that he has a bad attitude towards learning, is fond of playing, doesn't listen to lectures, is smart and so on. The fifth grade is an age of thinking, and his learning attitude determines the result of his tutoring, which is not given by external forces.
As for the preparation you have to do, it is the outline and focus of the knowledge in primary school textbooks. You must clearly know the core of each knowledge point and know whether the students have mastered it. Secondly, there should be a set of appropriate test questions for children to do, check for leaks and fill gaps.