Wrong assumption that it was India who tested waters on LAC rather it was Chinese who ingresses and are now occupying Indian territory.
There was a talk, rather jingoism in India before this situation on LAC , about attacking the Azad Kashmir and Gilgit Baltistan region of Pakistan. That's where the CPEC goes through. This PLA action on LAC is by all accounts a coordinated action with Pakistan. There are reports already of Indian troops redeployments from Kashmir to LAC in a desperation. Also before this action in Laddakh, PLA also send the signal to India on Sikkim side as well, which is like literally few KMs away from Indian's chicken nest, connecting northeast India to the rest of the country.
There will be no support from so called Quad to India, as America itself is in no position to confront China military or otherwise, Pentagon report clearly stated that. And specially after internal situation in America has gone from bad to worse. None of Indian foreign sponsors have uttered a single word in support to India.