This is somewhat a ridiculous plan by the Indian Government which is synonymous to banning the use of pirated movies and music which of course is very
difficult task to do! Even the U.S. Government recognizes it as a very difficult task to implement and only promotes it adoption over time.
Banning Bitcoin as such is pretty much impossible, sure. But you see, people still need to exchange their BTC for fiat if they want to make use of the money. And this requires online exchanges or a very good system of interpersonal direct exchanges of money. The government can track such exchanges and pretend to be Bitcoin buyers to learn who the sellers are, thus covering both ways of selling Bitcoins, and it can impose serious sentences like imprisonment or huge fines. This would be enough to discourage the vast majority of users.
Op, if it's clearly a crypto ban in India, and there's not much hope for a change of heart, and you're not planning to move to another country, I wouldn't risk holding something i can go to jail for, while you still can legally sell your BTC and get your money (if you can).