Switch controllers vibrate extremely loudly: defective? - eviltoast

Hi all, I’m not sure what to do here. The controllers vibrate extremely loudly, it sounds like I am shaving my face! I don’t remember it being so loud when the thing was new, just two months ago.

Is it defective?

What’s the best way to get warranty replacement? I got it from Amazon but the only course of action there is to send in the whole thing for repair. Is that the best choice?