Can you copy a "Vanilla" save file and mod it?

Hello all,

I am not sure if this is the place to ask but it has been a while since I have played BG3 and I had a character or save file that I started a while ago ago after patch 7 came out and I was wondering if it's possible to somehow make a copy of that character or save file and then add mods to it so that I have a non-modded file and a modded one? Kind of like how Fallout 4 did it, where if you tried to play a non-modded save with mods, it ends up making a separate modded file that you can switch between or enable/disable mods. I'm just curious if this is possible because I wanted to try some mods using the in-game mod manager, but I wanted to ask before trying anything in case it breaks my game. I am on PC if that matters at all.

Thank you!