How to treat citrobacter, kiebsiella with oregano and olive leaf?

My cultures came back +4 for both citrobacter freundii and kiebsiella oxytoca. The lab indicated susceptibility to oregano, olive leaf and uva ursi. After a month of uva ursi, I still have reflux, brain fog, lethargy, bloating and belching after eating and suspect these opportunists are still hanging around. I am trying to resist treatment with Antibiotics .

How to treat with oregano or olive leaf? What is a proper "high stregnth" dosage? How long to take either of these? With food or empty stomach?

Other potent treatments for these bacteria?

Thanks for any help.