FAA, not CAA AME here….
Crohn’s is a total gi tract disease, that is likely with you forever, but doesn’t necessarily mean the end of your life as a pilot.
Most of the world has a more liberal approach to BRMs than does the FAA (they just last month approved Humera for RA as a CACI which is, as far as I know, the only exception to their blanket deferral associated with monoclonal therapies)
Anyway, I’ve got bunches of Crohns and other IBD airmen flying around happily without that stuff, but it really seems to work well, so if you’re on it, it’s working, and you’re not symptomatic, I’d bet you’ll be good to go. The likelihood of having a ‘“normal” upper and lower endoscopy with an actual crohns diagnosis is fairly low, but if it works, don’t knock it….