Yes... we've tried everything, including stupid diets and even FMT. If you've read it on the internets we have likely also . We are mostly aware and thinking 24/7 about our disease. So yeah, whenever someone randomly tells us to try X or Y random thing, most likely we've already tried it, or have pondered it and decided not to. So most similar comments are usually annoying.
90% of people who tell me they've 'tried' dieting haven't really. Have you actually strictly followed an elimination diet for at least a year?
Most people say something like they stopped eating bread for three weeks and it didn't help. But that's not good data. One must eliminate every single source of gluten and dairy (or do something like SCD diet) by studying the ingredient labels on everything they consume, and do this for 1-2 years, with zero cheat days. Most people can't do this.
Which is why
> have pondered it and decided not to
Look into nicotinic acid, a form of niacin. The "flushing" one. If you supplement with it start slow, get used to the burning sensation. It goes away after a few times.
Avoid biologics unless you absolutely have to