Q. A 58-year-old construction worker visits the medical outpatient department complaining of progressive pain in his right knee over the last six months. He reports no trauma or injury but mentions that the pain worsens after a day's work. On physical examination, the right knee shows no signs of inflammation or swelling, but there is tenderness along the medial joint line. An x-ray reveals mild joint space narrowing without any signs of fracture or dislocation. What is the most appropriate initial management for this patient?