Your question is not about Jesus’ ability to sin, but about his conscious knowledge: “Was Jesus aware that he could not sin?” Your answer, “Yes, he knows that he could not sin,” does not actually address the question. The question was not whether Jesus knew that he could not sin, but whether he was aware that he could not sin.
God’s control of the future is first revealed when Daniel 1:2 states that “the Lord delivered Jehoiakim king of Judah into his [Nebuchadnezzar’s] power.”