You can get income based deferrals, or reductions in payments. You have to prove your income and debt. Call your loan provider, and they can provide you with the options. Depending on what type of a loan you have, it may be a one time thing.
That said, what are your other options? It sucks that you have that payment with your income, for sure. But can you get a cheaper car? Do you have a relative with a beater car that you can buy? Can you move closer to work? Can you live somewhere with cheaper rent? I'd suggest other options other than trying to lower your repayment. It will be a long time to pay them off, but with interest riding, you could make it alot longer if you choose to reduce your payments.
I understand it's not uncommon nowdays for people to come out of college with student loan debt and lower incomes, but how did that happen to you? What was your major? Why the high student loans?