The aftercare is possibly even more important than the spanking itself. Hugs, reassuring words, forgiveness, massage...what ever gives the 'ee reassurance that he/she is forgiven, and the slate has been wiped clean.
I posted "Screen Time" a while ago as a way to curb/monitor use. Got nothing but a lot of static and backlash from folks who had trouble reading.
My EE an I use it daily to keep her use in check.