How to make a different React Native app out of existing app

I have a React Native CLI project that can be built into an APK file. I need to amend the project and make a lite version of the this app. But, it needs to be a different app, meaning when I generate an APK file, it gets installed onto the same android device as a different app, without updating the existing one. Could you please tell me which files in my project folder I have to change and how to make this possible?