You won't be getting a better time in the future. That is for sure.
But you should have started with highlighting oppression against Muslims as a casus belli. You have almost already missed the bus.
Of course BD will turn pro China.
But what is the end game you are looking at?
A Chinese occupation of India?
A break up on the other hand will help the minorities instead of an all out invasion.
What about the rest of India?
Kashmiris did not side with India in 65. They just wanted peace to return.
Ladakh wont become pro China. It has a sizeable Buddhist population - all of whom follow Tibetan Buddhism.