I have heard a number of explanations for what Thomas said to try to make it look as if Thomas was not saying to Jesus "My Lord and my God" and meaning it just as it sounds. So really I don't have to say anything about your explanation.
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The disciples only started calling Jesus "Lord" after His resurrection. That is the context.
NO, Jesus was called " Lord" throughout his ministry for example:
Luke 6:46
“And why call ye me, Lord, Lord, and do not the things which I say?”
It is amazing that you think that when Thomas said "My Lord and my God" the term "my Lord" applies to Jesus but the term "My God" does not apply to Jesus.
NO it is not, Jesus has to ask advice of God because Jesus lacks knowledge and has to be told information because Jesus does not know everything. Only God knows everything. Jesus said he could pray to God for the use of Angels but Jesus can not command Angels to serve him by his own power. Angels of God love Jesus the Son of God but they obey only the commands of God, the Father. God alone decides how the power of Angels will be used.
Jesus never called himself God and did not want people to worship him even though some people did anyway against the wishes of Jesus. Jesus was compelled to teach prayer is to God the Father creator of all life on Earth not to Jesus, "Our Father which is in heaven." Jesus did not create life, God the Father did, but Jesus does try to save the eternal life of all humans God created on Earth.
Not all Lords were men in those days. I'm sure there were many Lord gods in other religions.
When did Jesus teach that no man is a God? Jesus did teach that the Jewish judges had been called gods (Ps 82, John 10:35)
Sons of Abraham, the temple priests, claim they are BORN holy as Gods under the covenant of Abraham while other men are not.
Like King David, they do any sin they desire to do with no punishment given to them by man. By law the sons of Abraham claim is from Lord God, David is cut off from his people and should be stoned to death for adultery. David did not care what God Commands because David coveted, he committed adultery, demanded war, had innocent people killed, deceived his people, threatened to kill his ruler, satanically mutilated the dead, rejected his first wife, danced naked in front of virgins not caring about their virtue and murdered his own son for wanting his throne. David was so lawless and such a bad father that David was unable to raise a righteous son that proved that fact by raping his sister. David is in no way a blessed by God bloodline ( blood of incest that carries possibility of damaged DNA and birth defects) but David had his scribes write that he is. Woe to those scribes because they receive the same damnation!
The Old Testament does say that people saw God. How do you explain that seeming contradiction?
Jesus said many times, "WOE TO SCRIBES" because what is written about the "royal bloodline" of Abraham that they alone are blessed by God to rule are lies that Abraham, the Father of that Lie he is blessed by God, and Abraham's "sons" that want the throne Abraham had written that belongs only to them, all had scribes write is truth when it is NOT truth." David did not see God but he had his scribes write that he did. God did not give Abraham an oath, covenant, but Abraham had his scribes write that God did.
Jesus called Abraham a devil for lying about God because Abraham was never selected above other men by God. Being exalted was the egotistical desire of Abraham to trick people into believing he is above other men when he is no different than any other man except he proved himself as Evil by lying, stealing, dishonoring his wife, refusing to uphold his vows to God, being incestual, threatening war against peaceful people and demanding war without mercy to steal from people and enslaving the survivors. God never demanded human sacrifice but Abraham wanted his people to believe God did. Abraham did not care if his son burned alive as long as Abraham gets what Abraham wants and Abraham wanted his army to believe he serves God when Abraham did not. Human/animal sacrifice to a God is an evil, pagan ritual and the Living God never accepted any of them but men wanting power over people lied saying their God did.