Early flare tips?

27(F) newly diagnosed with AS (only a couple of weeks ago based on MRI findings). My inflammation is currently localized to my SI joints and often manifests as severe, referred groin pain that makes me limp.

I also have a J pouch and a history of ulcerative colitis meaning that I can’t tolerate NSAIDs. I’m certainly not against biologics but we’re just in the midst of having conversations about what treatment to try first. I’m just wondering if anybody has any tips for calming early signs of a flare before it progresses to a full blown debilitating one? I’m still so new to this and feel a bit lost. Thank you!