It sounds like you’re trying to fix the symptom, not the actual problem.
Look into why your lock is dropping off the network. Chances are, you don’t have enough zigbee routers to strengthen the mesh, or you have interference issues, or your lock is crappy.
Either way, re-interviewing or changing coordinators isn’t the way to go long term. You need to figure out what exactly is causing your issues. I suggest you start by reading this.