Rachio 3 keeps going completely offline

My rachio 3 keeps completely offline. When this happens there are no lights on the front of the controller. The only way to fix is to unplug it from power and plug it back in. This results in it working again for a few days until it inevitably turns itself off again. This only started happening in the last few months so it seems like my unit may be failing. What can I do to troubleshoot?