Converting Primary Residence to Rental Property within the Tax yr

[Paul Bruso]

I recently moved out of my primary residence and into a rental property. I am renting my primary residence and will convert it to a rental property. My question is, I made this change on 8/31/2018 so, for most of the tax year it was my primary residence. Does that mean I have only 4/12 (Sep-Dec) rent, expense, depreciation on the Schedule E and I take 8/12 of the mortgage interest as a deduction for when it was a primary residence? 

Thanks,

Paul B