Two words repeated: shanaih shanaih. Slowly, slowly. No rush. Krishna is not describing a lightning-bolt experience. He is describing a patient, gradual settling — like silt drifting to the bottom of a still pond.
The method is simple. Hold your intellect steady with patience. Place the mind in the Self. Then think of nothing at all. That last instruction sounds impossible, and Krishna knows it. That is why he starts with 'gradually.' A river does not freeze in an instant. The mind does not go silent in one sitting.
Notice the tenderness here. Krishna does not demand silence. He invites a gentle approach — as if saying, 'Take your time. Each small step counts.'