That old trick isn't going to work. What india should do is give up its ambition for being a superpower , don't meddle in China's affairs. Once the US is driven out of Asia, there will be peace and prosperity for the nations in the east and SEA.More than the PLAAF, the concern for India should be the fact that China has the largest inventory in the world of non-nuclear ballistic missiles. Added to our inventory of cruise missiles and rocket artillery (all with more than enough range to target Delhi which is only 300 km from the border)... it means a first strike using these thousands of missiles could overwhelm India's airfields to NE India, rendering their ground troops without air cover.
The next issue would be the border infrastructure, which currently is massively in China's favor. Allowing us to bring far greater concentrations of troops and equipment to any point along the LAC than India can.
India's advantage is that China is mostly focused on the Pacific. India could do what we did these past few decades, essentially keeping their heads down and avoiding grabbing attention. Then use the time to build up their economy to double-digit growth, as well as inducting greater numbers of domestic weapons platforms. And building up their military production capacity, so they can produce very large numbers of indigenous platforms if necessary.