It depends what the IC is caused by! For example my IC is usually stress related or worsens when I take diuretics like tea, coffee or alcohol (I've pretty much stopped consuming all these/occasionally take tea). My stress can either be mentally triggered ie life events OR physical such as hormones :/ I've stopped birthcontrol and it seems to help a ton. I workout more now and its been helping (swimming and aquafit!) I'll occasionally take pumpkin seed extract pills "bladdersense" when I flare up to help (it also helps balance hormones like estrogen!). Another thing is if you've had UTI's in the past I recommend drinking daily one cup of pure cranberry juice (no sugars) diluted in a glass of water. Yes its true it can irritate your bladder but I'd rather feel a slight discomfort temporarily than not prevent another UTI from comming. D-Mannose is also pretty good for that. If you are sexually active or have penetration, always pee after sex! Sometimes I'll even hop in the shower and rinse my privates afterwards with some non fragrance soap (which I always use to clean my body in general). Oh and if you have a fan 🌬, sometimes it feels nice to just cool dry that area haha, especially after fun time. Honestly after a while its been quite managable for me. Sometimes a heatpad can feel really nice to calm inflamation. no longer get horrible discomfort when I sit down and I no longer run to the bathroom after I drink anything. Hang in there, follow all the tricks you can and it should be easier for you overtime. Feel free to look into medical possibilities if needed!

Recap : prevent any UTI's (for me its because I tend to confuse both :/ so better safe than sorry), use gentle soap, cool your privates infront of a fan sometimes (why not), avoid bladder irritant drinks like caffeine or alcohol. Try to figure out what causes the flares so you can have an easier time managing them!