Re-occuring lymph node TB. Resistive tb?

I had a lymh node swelling on left neck, it was operated and diagnosed as TB on October 2015. I took AKT4 for 2 months followed by AKT2 for 4 months. But again on April 2016 swelling came back and I consulted a pulmonologist, he said it's because of suboptimal dosage. Pus was collected through USG guided aspiration and was diagnosed as non resistive TB. Since then, I am taking Rcinex 600-1 tablet, combutol 600-2 tablets and benadon 40-half tablet. Again on Feb 2017, swelling reoccured. I underwent FNAC, but since pus was widely distributed, they could collect just a little amount sufficient for FNAC test. FNAC reports suggest I still have TB. I have consulted another pulmonologist this time and he told me it could be because parazinamide is missing from my medication. What should be my next medication course? How can I be sure that it's non resistive TB?