You can only do this AFTER he sees you. The best way is when you listen to the convo between Bo, Rusl and the father of Malo and Talo walk back and pass the bridge. Then beth's father sees you. He will send the hawk at you. Quikly go back on the briodge and run back to the spot you were before. Just jump into the water after continue running and climb up at the other side. Then you will pass a spot and this time Midna will call you.