Asking “how long should I hold Bitcoin for passive income?” comes from the fiat mindset. In today’s system, your money bleeds value, so you’re forced to chase yield and “passive income” just to stay afloat.
Bitcoin flips that. It isn’t meant to generate yield — it’s money that can’t be diluted. The longer you hold, the more purchasing power you preserve as fiat is debased.

So the real answer: you hold Bitcoin not for income, but to step off the treadmill.