Idk I used to spent quite alot of hours last year playing Graal. I had one real exam and the rest mocks so instead of revising I played Graal and **** and only like a week before my exam I realized one day that i'm throwing my life away. So I revised got my A and then realized I had the whole Summer to do whatever the **** I wanted.
For this year It's my final exams and it's exam season so I revise for 3 hours (when I get home from school) for my exams. I play Graal at certain times as I believe having control is the best and you realize you don't miss out on much. I just play Graal whilst i'm having a break from studying or after I finished studying for the day. Just play Graal in free tim and don't let it over take your overall life.
Just think about this. If you work now you will live with the rewards for the rest of your life. If you spend it playing with Graal you won't achieve anything in life and only friends on a virtual game (who would tell you to focus on your exams and ****).
Real talk now... Study your heart out and enjoy life in the Summer. You spend like what 4 years of your total life working hard as **** studying. When you get to University life is much more chilled out and you'll know you will have more free time. Make the sacrifice now and enjoy it for the rest of your life.