How do you keep production projects & testing projects organized?

Ok, so I took my app to the play store. I made a duplicate of my project in kodular “name_testing” & the original project “name_production”. My idea is to work on the testing version until I need to update the production app on play store. I will rename the testing to “production” and the old production app will be “version 1.2” and so on so I have a version copy for my records. However now I’m having the issue again with the app not opening again. I fixed it but I’m wanting to know what is the best way to organize projects in modular.

I usually name my projects like -

AppName_0_version_what is new here (0 specifies test version :crazy_face:) and another underscore to show what was fixed/added in this version

This is how i organize my projects!