Running a custom command periodically

My Google mini likes to stop making announcements on a regular basis. If I go in and click refresh it spits out all the things it failed to say and works perfect again for a few hours. I would like to have something setup to auto refresh it every few hours. I created a custom command for the refresh but I cant find a way to implement it every few hours. Any ideas? Or is this a known problem with the minis and there is another fix? All of my devices are on IP reservation so I don't think that is the problem

I am not familiar with the Google mini integration but if you can send the refresh command from the HE device driver you can easily set up a refresh schedule with RM.