Mortgage points buydown tax deduction

[Gipsy Field]

I bought  a triplex December 20, 2018, I live in one unit and rent the other two. I bought down the mortgage interest rate by paying 7.5 points. my tax preparer said to wait until next year and take the deduction credit in 2019 taxes since I only owned the property for 10 days in 2018. I was doing a lot of research and it says to take the deduction the year I paid the point buy down to take the full credit at once otherwise the credit is amortized over the years. Anybody know about this?