Every durable allocation begins with a question that has nothing to do with markets: what will this money eventually pay for, and in which currency? A child's overseas education, a future relocation, or a USD retirement bucket are dollar liabilities — and a dollar liability is the single best argument for a dollar sleeve. Match the currency of the asset to the currency of the goal and you turn 'currency risk' into 'currency hedging' for free.
Anchor the plan to three numbers before you look at a single fund: your time horizon, the share of future spending that is non-rupee, and the maximum drawdown you can hold through without selling. Those three constraints quietly determine 80% of the right answer.