Yes, in the midst of acting out, all seems right. Been there a thousand times.
Regarding your concern that 90 days won't work for you, you're right there too. 90 days isn't a religion. It isn't the end goal. It's just a stepping stone some find useful. But it's only useful in the context of real recovery, not just fighting (white-knuckling) for 90 days or 190 days. That's like a dry drunk locked somewhere he can't get booze. You can keep him there for 5 years. The day he gets out he's back at the bar. Because he hasn't done anything to change.
Abstinence alone won't make you sober. It's a start. But even abstinence from internet porn doesn't mean abstinence from lust. Lust takes many forms -- gazing, fantasizing, inappropriate marital relations. So A) you may never really have gone 90 days, and
even if you truly have, that abstinence alone isn't enough. For real sobriety, we don't just abstain, we recover. That includes the critical step of surrendering our lust.
Making any sense?
Welcome!
Alex