All my devices are old, so I don't know much about using @ezdiy's root kit. If it works on your device, it would be the easiest way to get ssh over wifi working. However, if it doesn't, you can install and run ssh without root privileges, as described in this thread:
https://www.mobileread.com/forums/sh...d.php?t=159636. It involves more work, and it doesn't seem to work as well with newer firmware versions, so I would only use it as a last resort.