This study is about treating HPV-positive oropharyngeal cancer, which is a type of cancer found in the throat and mouth. HPV is a virus that can cause this cancer, but it usually has a better outcome than other throat cancers. Normally, after a special surgery called *transoral robotic surgery*, patients receive a treatment called radiation therapy. Radiation therapy uses strong rays to kill cancer cells. However, it can make swallowing hard over time. This study is trying to see if giving a lower dose of radiation after surgery can make swallowing easier and improve life quality. Patients who have no remaining cancer signs after surgery will get a reduced radiation dose for 3 weeks, while others will receive the usual treatment. After treatment, patients will have check-ups at 3, 6, 12, 18, and 24 months.

• Study involves 3 weeks of reduced radiation therapy for eligible patients.
• Regular follow-ups after treatment to monitor progress.
• Participants must meet specific health criteria to join.