E-File amend

I filed my tax return and it was accepted by the IRS last week. I am supposed to get $1324 refund. However, I left out $3K+ interests from a bank which I forgot put in the Schedule B. I did the amend, Turbotax said I owed $1284 now, that if I received $1324 from the IRS. I have not filed the amend. I don't want to pay $1284 to the IRS before receiving my initial refund first. Please advise.