I was never able to "head off" flares, they came when the came, at least once each year, no rhyme or reason to it other than maybe change of seasons.
I certainly got better at knowing how to manage it, and how to keep from being uncomfortable or having an accident. I might have done some wrong things when I was young that caused me to have worse symptoms unnecessarily, but I eventually figured stuff out. Like what and when to eat.
BTW, when I was younger I never got sick. I seem to be more susceptible to bugs going around now that I am older (and not just since Remicade).