If your existing punishnemt isn't working, I don't think going harder is the solution. I'd be inclined to say pile on punishments of different genres. For my own problem, which is texting while driving, we do: lose computer privileges for 2 weeks, no spanking during that time, and after the 2 weeks a major spanking. All infractions during the 2 week period are doubly punished. Something along that line I think might be more effective. You could do something like a week of nightly spankings, and loss of privileges along with it. So that it's felt as a major infraction. Do you do mouth soaping at all? Because it suits the crime, it may be quite effective.
'I had made the mistake of powering up my consciousness without having the appropriate scaffolding in place'
Marni Jackson, 'Pain'