Faking destructible mesh functionality on Mobile

I understand destructible meshes are not supported on mobile. However, I’d like to fake this with a second pre-fractured static mesh that can swap in when destroyed.

How could this be achieved? When I try to import a pre-fractured static mesh with a collision mesh for each chunk, the static mesh always acts as if all chunks are welded together - one big solid for all mesh sub-objects.

Is it possible to have physics turn on for sub-meshes within a static mesh? I have tried selecting “Multi Body Overlap” but this doesn’t seem to do anything.