Disable Developer Options on Amazon HD 10 Generation 9

Hello. I have an Amazon Fire HD 10, Generation 9 tablet on which I enabled developer options. I have since toggled it off, but I’d really like to disable it (make it disappear) again, since the tablet is used by a child. Developer Options were enabled by tapping the serial number seven times in “device options” of “settings, so I’m thinking there is a way to reverse that. Does anyone on this forum know how to disable developer options? Thank you