How and why? Just don't talk about it anywhere and use vpn. You are just holding in long term and not trading.
So how do you supposed to cash that out? If you are looking to cash out big then you will be living a lot of footprints behind you and almost certainly you will be caught doing that. Cashing it out outside of your country is not an option as well, what will you answer when you returned richer in your country without providing any kind of proof to them? Of course you have no choice but to tell them the truth that it came from cryptocurrencies.
I'm more furious about their regulations in India as they are evidently making it hard for their citizens to make cryptocurrencies useful in their country. Its like they are just making it look like cryptos are allowed in their country yet the truth is it is really impossible to earn and live freely with it.