Scaling for Multirotor

I am looking to scale a smaller quadrotor from a considerably larger one. Reasoning is to have the small drone behave identically (or as close as possible) to the larger one so that flight characteristics can be examined at a much lower cost.

What methods can I use to properly scale this system? I was initially thinking of adjusting thrust:weight but wanted to include mass distribution. So I also calculated mass moments of inertia from both and wanted to scale accordingly with mass distribution but I am getting some funky numbers and I am likely approaching this poorly. Any advice on how to do this would be much appreciated. Thank you in advance.