how do I split interest reported to an individual on Form 1098 between him (a decedent in 2019) and his estate.

My father died on April 4, 2019. At the time of his death he owned a home with a mortgage, which was paid after his death through his estate, but the home's ownership was not transferred into the estate. The home was sold in November 2019. The mortgage company sent a 1098 under his SSAN for the mortgage interest paid through the closing date.

How do I split that amount between his final return and the estate's tax return?