In case you're not already aware, there is a SIBO subreddit support group r/sibo I believe. Definitely keep a food journal. It takes a while to sort things out but I've noticed there's a link with certain foods and feeling worse. Good luck with things. Oh and if you have insurance issues with them covering Rifaximin as often as you need it (when I first started I needed to be on it for 3 weeks every 2 months for about a year but my insurance only covered twice a year), the drug manufacturer has a program that they'll send you prescriptions direct from them for free. It's a lot of paperwork unfortunately but worth it vs paying out of pocket.