Is it small intestinal fungal overgrowth (SIFO)?

I just finished a course of ciprofloxacin plus metronidazole to empirically treat SIBO. Not my first rodeo with it, been treated at least half a dozen times. We are to the point where we do not do breath tests anymore, just go off of symptoms as I am very prone to it (SBS, no ileocecal valve, slow transit/history of constipation). I take Xifaxan 500 mg twice daily to prevent, but this is the 2nd time I have had a "flare" that has required different antibiotic treatment. I quit the ciprofloxacin halfway through due to side effects. I felt great improvement the 1st week after completing the course, but now symptoms are returning (bloating, gas, diarrhea, fullness right after a meal, fatigue). Has anyone gone through treatment for SIFO, either while getting treatment for SIBO or just on its own? I am highly suspicious and would like to hear success stories and/or tips.