Jesus, being God and man, had the knowledge of God for what was ahead but also the fear of man when unbearable pain is going to be experienced.
No, there was no other plan for the redemption of man. This would have to be played out with even a separation from the Father during the excruciating pain of the cross.
He went a little farther and fell on His face, and prayed, saying, “O My Father, if it is possible, let this cup pass from Me; nevertheless, not as I will, but as You will.”
Not possible, is written over the answer to this prayer.
Give it some thought.
Gary