Hi,
There are no hard and fast rules with IBS, we each need to find or own way through. A good starting point is the Fodmap food list keeping a list of what works for you or dosen't. Seek the help of a good dietitian and try to stick to your diet. You soon learn that if you don't stick to your diet you are the one who pays the price.
Cheers

Good plan to try Fodmap and utilize a dietitian.
Have you been seen by a gastroenterologist and
had a scope with celiac tests.?
Gluten free diet if you don’t respond in several months
worth a try.

You should definitely consult with a gi dr as well as a nutritionist. My daughter has Ibs. Different things affect different people. Have you had a colonoscopy? Endoscopy?

metoo@graceym1, i started elimination of processed food. No sugars. Use honey. Stash licorice tea. Heating pad. Hot baths. Epsom salts bath. Oatmeal. Eggs, fish, poultry white meat. Sweet potatoes, squash.yellow w a couple brown spots are good for IBS-C. & green bananas for IBS- D. Senokot gentle laxative. What works for me may not work for you.

If you're w diarrhea you don't wanna eat many fruits & veggies. Can you drink juices? Replace fruits?
IBS-C I stopped nuts, seeds, popcorn. Tested negative for food allergies? I did.
I understand fermented food as yogurt, sauerkraut are suppose to be good.