The belief that Christ had a unique separate human nature (or human soul) that is separate from His divine soul as God is called Nestorianism.
https://en.m.wikipedia.org/wiki/Nestorianism
What is Nestorianism? Who were the Nestorians?
I believe it to be unBiblical. Christ was 100% God in His eternal being as Spirit. The flesh was just a shell. It was a temple. For Jesus said so Himself. Jesus merely suppressed part of His divine attribute of Omnscience (To have all knowledge) and relied on the Father and the Spirit in these matters until His mission was complete. However, that does not mean Christ did not use His divine power, though. We learn that Christ does have power during His Earthly ministry of His own as the Son of God. For Jesus said He could quicken just as the Father can quicken. Jesus also said He would raise His temple (body) in the resurrection. Jesus also had power to forgive sins and paid the price for all mankind's sins so as to offer the free gift of salvation. Jesus held all things together by the Word of His power when he purged us of our sins on the cross. Jesus also said, where two or more are gathered in my name, there I am amidst them. Jesus had power and He used it, but He did not showboat His power. The miracles (works) He did were done by the Father. The Spirit also worked in His life, too (For example: He was taught the Scriptures as a child by the Spirit). But Jesus was 100% God in nature. His human body was merely a body. There was no human soul. And because God cannot be tempted, any temptations in the flesh by the body of Adam would have rolled right off Him like water.