Paid a $5,922. Naviant Student (Unsubsidized) Loan interest in 2017, but permitted only to deduct $2,500 on 1040; may we deduct another $2,500 now in 2018 (& perhaps the remainder in 2019)? Plus paid a $276. Naviant Student (Subsidized) Loan interest in 2018 which we would want to deduct, if not in 2018, then in 2019...can we do that? Got1098E's for both yrs.Thanks.