Can relate. It's the final boss between me and my objective. And just like some final bosses are only vulnerable during brief moments for counterattack, so is my SI only vulnerable in rare, small timeframes of intense emotional agitation (impulsivity).
I'm going with SN and it's my concern as well. Initially I planned to prepare some good music but now I wonder, what about masturbation? It doesn't require much time. It's enjoyable, and can potentially overlap the intense distress from being aware of a life-threatening situation, just like in those famous stories about mice mashing pleasure buttons until they die.