I'm really worried about my grandfather. He was diagnosed with TB about seven months ago and took medication for six months which ended on December 16, 2022. It's been about a month since then, but for the past ten days, he's been coughing excessively again. Last time when he was on the ATT drug, he felt uncomfortable and his SGPT and SGOT levels were really high. We got some tests done and, thankfully, his LFT and CBC reports are normal now. But the sputum test came back positive again. Our doctor has currently prescribed Amoxicillin 625 mg, Montelukast 10 mg, and a cough syrup. I'm trying to figure out if he should go back on the TB medicine or if there's something else we should consider. Could you give me some advice on what the next steps might be?

Pulmonologist opinion is advised to the patient.