@monisharpa2020
If you’ve already implemented most of your solution and only now realized that using the full REFramework would benefit you, then the best way forward is to create a fresh REFramework-based project and move your existing logic into it.
You can do this manually by creating a new project from the REFramework template, then copying your .xaml files (like workflows, helper logic, etc.) into appropriate places in the new structure.
It’s a bit of effort, but it’s the cleanest way to fully benefit from the framework’s capabilities.