Are there no other top exchanges that are regulatory compliant that are operational in Indian? I don't think only Wazirix can cater for the millions of users who have been using Binance.
There's a fairly recent article of the list of crypto service providers who are in compliance with FIU-INDIA and I see a couple of familiar exchange names. I'm not sure how wide are their prescence in India though. I suggest asking in your local board. The article in question:
https://news.bitcoin.com/indian-government-reveals-28-crypto-service-providers-are-registered-with-financial-intelligence-unit/Honestly, India's a tough place to break in given the regulatory pressure. IIRC coinbase once tried but flipped after for the exact reason. There's also the high tax rate that made their crypto users sheer away from their local exchanges.