if you have the 12 statements from 2018 , just add up the interest on those 12 statements and use that.
or
take the 12/31/18 balance, add the PAYMENTS you made for the year and then subtract the 12/31/17 balance. What is left should be the interest
remember that the maximum that can be deducted is $2500 and there is a phase out that begins at $135,000 and ends at $165,000 of income, so if your income is greater than $165,000, then not worth the exercise.
