How Can God Not Know What He’s Chosen Not to Know?

Questions about whether the view that Jesus didn’t know the time of his return because he limited his omniscience is the same as Open Theism, when Jesus became aware he was the Son of God, and whether Jesus wants to be “served.” 

• Is the view that Jesus didn’t know the time of his return because he limited his omniscience the same as Open Theism? How can God not know what he’s chosen not to know?
• When did Jesus become aware he was the Son of God?
• You really believe Jesus wants to be “served”?