Aging Out Kid: Priority Date May 2012 EB2 India - Child Status Protection Act

My daughter will turn 21 on March 15, 2023. My priority date is May 10, 2012, in EB-2 India category. I wanted to learn the community’s opinion if I should downgrade my application to EB-3 in October 2021 or stay in the EB-2 queue. What are the advantages/disadvantages of downgrading to EB-3?

My I-140 was processed within 15 days so that will not add any extra time to the CSPA Calculation.

Thank you for your help!