Switching from Laravel 5.2 to Lumen

I started a personal project ages ago and have managed to keep dependencies pretty up to date. Summary: It's a web game with an angular 1.x frontend and Laravel 5.2 backend. I have no fancy extension really, just laravel + jwt-auth (although I'm looking at changing it based on a blog post I've read (https://medium.com/@barryvdh/oauth-in-javascript-apps-with-angular-and-lumen-using-satellizer-and-laravel-socialite-bb05661c0d5c#.czip9id5k)

How easy is it to switch to Lumen? Is it just a simple matter of uninstalling laravel and installing lumen?! It feels like that's too simple ;)