You might have a pouchitis issue as well. When were you last scoped?
My personal opinion is that these issues will not be helped that much by probiotics, although they won’t hurt. Probiotics and reduction of sugar and carbs are more long term and not short term plans for the rectification of the bacterial imbalance. They are not going to be effective short term treatments.
What is a highly effective short term treatment for the symptoms you described is Pepto Bismol. When I have had issues like you described PB is almost instantaneous relief. It’s toxic to the bacteria in your pouch. You will need to be very careful to take probiotics at least 2 hours before or after ingestion of PB. Although frankly I would go off probiotics while taking PB and resume once PB knocks out your symptoms, which it will.