165Q 162V is a good score for Ph.D. degree application, and for appling the top programs, both Q&V score higher than 90% is recommended, when you look at the GRE scores for top universities. 165Q and 162V are ranked 89% and 90%, respectively, according to the GRE score chart. If aiming at top programs such as Harvard/MIT/Stanford, I would choose an online GRE course or find an offline tutor to increase score, otherwise I would just follow the current study plan. Best result in application!