The big question is, are you hitting them with your eye closed?
If you are, then dont change anything. IMO
I used to shoot with left eye open, now sometimes i do, sometimes i dont.
But making changes to muscle memory is a long time process.
It takes 20-30 hours of repetitivness to consign something to your subconcious memory, ie doing it without thinking.
So expect hard work if you want to change what comes naturally to you..
Some of the best shots i know, shoot left eye open. for the very reason you identify, good range judging.
Best of luck
Yes Im hitting stuff. Doing well. But just dont know if i will only reach a certain standard by closing one eye