Create a new return to estimate 2025 (but keep 2024 return)

I have not e-filed or printed my 2024 taxes yet.

I want to play with some of the same numbers in a new return to estimate 2025 taxes.

Can I copy the 2024 return and modify some of the information in a new return without impacting any information in my 2024 return?  How do  I do this?