The herbals noted are fine and safe, and can be effective or not.
ACV "may "add to gerd issues, fermentation issues. SIBO does not directly cause some of the issues noted,
but if epithelial is damaged, and toxins are leaking into blood then sure, histamine, joints, brain. If drugs helped or cured temporarily, it would indicate dysbiosis; H2, H2s or CH4. Maybe sulfur component or primary. Maybe fungas (sifo).

Tthe challenges involved in treating with drugs or herbals involve far more nuance than most patients can absorb and more than "most" GIs can deal with. Your physicians response indicates that she/he is not
qualified to address herbal efficacy. Why would you expect an MD to respond favorably to alternative remedies?

If symptoms returned, did your MD test again? If not, how does she/he know if progress was made or not? Sibo may have retured but if levels were reduced, it may suggesst another round immediately or another longer round or another round but with Metronizadole. etc. Mulitple rounds of drugs or herbal remedies may be required,
alternated and/or coupled with a prokinetic. Did you take a prokinetic, after, before or with? If not, your doc is way, way off the beaten path. You may benefit from a 100-200 hours of online research. Google, Dr. Pimental, Dr Siebecker and siboinfo.

Consider giving herbals a whirl, but get an ND/DC who has taken mastery coursework. SIBO/ IMO are not taught in school, right? It is not possible for an ND/ DC or MD to reach first base without a minium of 50 hours of training. My background includes 50 hrs into formal, online training and a thousand additional hours over ten years and am not an expert.