Does he respond to text? If so you could make a bot that masquerades as mum. Or perhaps you can just settle for a half-solution that would make it much easier for mum to be issuing these commands? Like having Alexa function as an always-on intercom rather than having to call him.
I'd think mum being the person telling him to do stuff, is what's working. Rather than just the fact that it's a voiced command? Does he listen to you too?
I'd think mum being the person telling him to do stuff, is what's working. Rather than just the fact that it's a voiced command? Does he listen to you too?