TKWind

Hi everyone, I have a problem with 2015 Legacy 2.5i. I bought this car a month ago and now the mileage is 800. Recently, I heard noise when moving when starting the car and shifting the select lever from "P" to "R". In the past, the sound of a P-to-R shift is muffled, like knocking two pieces of wood, Recently, however, it sounds sharp, like knocking two pieces of metal occasionally. Is there anything wrong?