بسم الله الرحمن الرحيم
Recite surah Alam Nashrah (complete surah) after each salah three times with durood 3-3 times before and after, and blow on water and drink it. Do the same in the night before going to bed in the state of wudhu. May Allah give you complete recovery soon! Amen!
Allah knows Best!
Darul Uloom Deoband
This answer was collected from the official ifta website of Darul Uloom Deoband in India.