Should I Fast or not during exams/ while studying for exams?

Ramadan Mubarak I'm a student who, in less than two weeks will be sitting exams deciding which University I get into/if I get into University. Today is the first day of Ramadan and I have not fasted, and my parents have told me it's fine as fasting can make revising and performing in exams difficult due to lack of nutrients and sleep, however, I'm still unsure on the issue. My last exam is on the day before eid so at this rate I'll have to make all my fasts up at a later date. I'm just wondering what should I do? Do I fast or not fast? Should i try 1 day and see how it goes from there? All answers are appreaciated. :)