Can Alexa control Kindle Fire's Wifi switch?

My Kindle Fire has a habit of losing the connection to our wifi. Sometimes it shuts off; other times it just gets "weak". (Our other devices don't have this problem, so I know its not the wifi.) This is my *real* problem; if you know a solution, please tell me. Meanwhile, I notice that turning the wifi switch off and then on will reconnect it to our network. I tried to set up an Alexa Routine to do this every morning. The only Action that seemed to apply was "Custom", so I used that and tried these phrases: *Alexa, turn on wifi* --> "Sorry, what device?" (If I answer "Shawn's Fire" it does a web search.) *Alexa, turn on wifi on this device* --> "Hmm. I don't know that." *Alexa, turn on wifi on Shawn's Fire* --> "Sorry, I'm not sure about that" Is there a way to get Alexa to turn the wifi off or on? EDIT: @ChanganAuto pointed that Alexa can't do anything unless the Wifi is already connected. (Also, I thought the routines themselves were saved offline.) So let me ask this: is there an app (or other method) that can turn the wifi on or off on a timed schedule, and do so while offline? (My phone has an app that can do that.)