If there is one thing I know for sure is that just because they say you don't have to pay back your loans right away, it is still beneficial to pay at least what you can to the loan in order to decrease it or just pay it off. One of my loans was not as high, but I was able to pay $25 per month towards the loan dropping it down to the point where I paid it completely off before I even graduated. I actually graduate in May of 2017, but I am putting some money towards the student loans I have only because it helps your credit, it makes it look really good as well as lowers your loan so you don't have a lot to pay once you do graduate.
Keep in mind, every little bit helps right now even if it is not the minimum payment.
Good luck and happy graduating