I hope you are right about 5 years but the politics in India are toxic beyond reason. Things are so fragmented, petty and corrupt it's truly heartbreaking. Diversity and "democracy" can be very good things, but India's divisiveness and internal feuds keep the government (and country) handcuffed. Onerous red tape is part of the DNA there.
For all of it's many faults, the CPC has proven over the last 40 years it can make big, unilateral decisions to advance China economically. It took Elon time to win them over but once the CPC made a decision, things went into "ludicrous mode" instantly. That can't happen in India.
Then there is India's infrastructure issues. Oh brother!
IMO, until India becomes compelling to Tesla because saturation elsewhere makes it their clear and best opportunity, nothing will happen. The good thing is building more GFs in China, Europe, the USA (and maybe elsewhere) will keep Tesla busy for a long time.