Baby squid cooks quite quickly, usually within 2-3 minutes in hot oil. The cooking time may vary depending on the size of the squid. To determine if it is cooked, look for visual cues such as a change in color. The flesh should turn opaque and firm, and the squid should become tender. Be careful not to overcook it, as it can become tough and rubbery. It's best to keep an eye on the squid while cooking and perform a taste test to ensure it's cooked to your desired level of tenderness.