I wish, I have not found a way yet and I work in cybersecurity. Though I have to admit I didn't give it my best at all.

One thing I would like to try soon is running FLauncher. Though I kinda doubt they will allow another launcher to be set as default. Their site offers some workarounds but "Fire OS" is a lot more locked down. For example using the normal ADB command to turn the screen upside down (needed for my projector) is not working either.