Adam didn't add anything. It was Eve who added things:Adam added "in the middle of the garden" and "don't touch it"
so blank state or not, that shows his emotional immaturity, he was acting like a child.
Gen 3:2 And the woman said to the serpent, "We may eat the fruit of the trees of the garden;
Gen 3:3 but of the fruit of the tree which is in the midst of the garden, God has said, 'You shall not eat it, nor shall you touch it, lest you die.' "
Genesis 2:9 tells us that both trees were in the "midst" of the garden
Gen 2:9 And out of the ground the LORD God made every tree grow that is pleasant to the sight and good for food. The tree of life was also in the midst of the garden, and the tree of the knowledge of good and evil.
Adam wasn't acting like a child. He was acting like a sinner.