How does ANYTHING happen in AH when so much tried and failed OTL; find one or more PODs that make it possible.
Would you accept a POD not related to India at all? Starting from
here, WI Japan does as
I suggested? With more Japanese effort in India, & more support for independence movements (presuming their situation gets desperate enough TTL), Britain might end up with
de facto partition postwar. Also, it occurs to me to wonder if TTL you don't see Winston not PM at a crucial time in the decision-making process, or somebody besides Wavell (?) as the last Viceroy; IIRC, it was a toss between him & Auk, & the absolutely wrong guy got it. Does this change the outcome? I mean, does a "worse" or more Imperialistic guy make CW worse still? Or does a "better" guy agree to a multi-state split?