Na, they're reacting too late. Given India's size and lack of healthcare infrastructure, they should have shutdown international travel and tested exhaustively early on. They let it get out of control and now are imposing a haphazard shutdown. The shutdown is needed, but there are too many reports of poor people going hungry for days.
Given the scale of difficulty, the country has moved swiftly.
It is yet to be seen if it is even possible to organize a shutdown the solve this problem, at India's scale. But, even the naysayers have acknowledged that in this case Modi made good decisions.