This DeFi farm pays 40% APY right now. But before you ape in, here's the 5-step process smart money uses to actually keep those gains. Step one — verify the yield source. Real yield comes from trading fees, not token emissions. Emissions-based APY collapses the second whales exit. Step two — check TVL on DeFiLlama. Under five million? Slippage will eat you alive. Step three — model your impermanen…