I just restarted PI 9 days ago. The first time I had the approach that I had to do this diet perfect so would not allow any off plan meals, well you know where that ended up. Not on plan at all. This time I took the attitude that sometimes I will eat meals or enjoy foods that are not on plan and not worry about, just stick with plan at least 90% of the time.
So if your off plan started cravings up then you just need to follow PI until the cravings are gone again. No looking back only ahead.