Yeah, but after 5 years at a higher loan repayment, you might as well continue than restart the 20 year clock since your loan will be decreasing. You also need to begin saving for retirement and 5 years less would hurt you.
Income based repayment (IBR/PAYE) is meant to reduce the loan pressure in those with lower salaries to help pay off higher balance loans that they otherwise would struggle with. By deferring the bulk of the payment until the tax bomb, you have greater financial freedom to grow your career, increase your salary and live your life.