How to go back last two year fetch data from that point

Hello, 
Currently, I have data for one customer for three years: 2020 (January), 2021, and 2022.

So I need to pick data from Jan2020 to current date how can i do this?

 As per sliding window, it went back two years and considered data from 12/9/2020, so we lost data from January to November for the year 2020.

Thanks,
Sachin N