I had bought an USHA make made in india fan 6 months back. Suddenly it has started rotating in reverse direction. Please help

Most all ceiling fan have a very small switch on them on the base of the housing of the motor.

Yes, first check for a reverse switch. I assume this is a metal bladed fan?

By changing the polarity of the capacitor and as well as to the motor connection it will rotates in reverse direction check it

I faced same issue, Just change the capacitor it will resolve your issue.