Stress and antibiotics have triggered IBS twice in my life. Twenties and more recently (forties).
"Mainly" clear and managed now, but took about 8 months. Lots of experimenting. Some things worked a lot didn't.
My diet isn't entirely changed but has just got healthier. It wasn't terrible before but not as good as it could have been, I think I let things slide for a few years due to busyness?
Which I'm actually quite grateful for as it's probably better for overall health as well.
Caffeine - coffee and tea were my major triggers. So I switched to boiled water or herbal teas or hot chocolate with ONE caffeine drink in morning.
Ginger was a quick fix life saver. Either ginger tea bags or you can boil slices of ginger in water until it becomes ginger tasting. I couldn't get to sleep some nights without my ginger infusion!
Magnesium solidified my BM - used "British Supplements" they're a great company. British Supplements also do probiotics (I don't have any connection).
Stress - I did need to make some changes and "slow down" a bit.
I can't say exactly what I changed with my diet but I took it as a wake up call and have tried to just improve my overall nutrition. I absolutely can have treats, junk, heat, spice, just not all the time.
If you think of solving it as a gradual process - 8 months not 8 weeks - and introduce some life things to look forward to as well.
It's definitely solvable, but be patient and kind and accept it may take time. See it as an opportunity to try some nice new recipes and improve your overall health for you.
If your body is complaining its a useful early warning sign.
Last summer I was going to the toilet multiple times after a standard plain roast dinner (cries). I thought I was condemned to plain bland food for life!
Impulsively grabbed a delicious extra spicy "samosa chaat" for lunch today and haven't needed a BM today.