Don't stop your Tubercular treatment,
Continue Tubercular chemotherapy as per schedule,
Knee physiotherapy
Try to flex knee if easy Flexion with slight force, continue same and try to achieve 90 to 110 degrees of flexion.
Next Steps
XRAY of your knee AP and Lateral view, if required MRI KNEE JOINT
Health Tips
if Tubercular knee, then you will req management accordingly for tubercukar management