Did Sakyamuni know he was a bodhisattva when he was born?

The story of the Buddha in Twelve Volumes says that when the Buddha was born, he took seven steps in the southeast and northwest, and each step gave birth to a lotus flower, and then he said finger by finger: Heaven and earth are the only ones. This is the birth of Sakyamuni, which can be seen in many temples (a boy with one finger in the sky and one finger in the ground).

It is not clear whether you know that you are a bodhisattva and will come again. Even the above story can't be explained. Because the newly born Buddha is ignorant, his behavior may only be subconscious. The phrase "I am the only one in the world" is not the Buddha's own style. This sentence may have been added later, based on the fact that when the Buddha was born, the fortune teller said that he might become the wheel king (the king who ruled the secular world) or the Buddha (the king of the spiritual world).

In the mythical Biography of the Buddha, Sakyamuni became a monk at the age of 29 and followed the practice trend of ancient India for six years, knowing nothing. That is, before the Buddha realized the Tao at the age of 35, he didn't understand the Buddha's meaning and tried to relieve the pain caused by his body by torturing himself. If he knew he was a bodhisattva, how could he not know this?