Well, a good portion of the millions of doses of AstraZeneca vaccine will be coming into Canada on flights from India. So it's really difficult for the Govt to ban flights and not risk India just cutting off Canada. Although that might happen anyway now...
India stopped exporting back on March 24,2021 and re-opened for small donations to certain countries, some (not all) Covax exports. Our Covax doses were coming from South Korea so I doubt we'll get exports India will view as 'optional'. We got some earlier in a PR coup for their President. "Hey look at developing India helping rich Canada". But now India is suffering so there's no way we're getting anything.
I just don't think India will ever be a reliable supplier. We're relying entirely on the goodwill of Europe as the two other major places (America, India) have shut us out and put their citizens first. Maybe the US might be in a position to help us soon given they have opened up vaccinations to people 18+ and their rates of vaccination are falling.