At what point in Jesus' temporal sojourn upon the earth might've He been most tempted to exercise His advantage?
I would have thought the time of His greatest temptation was in the garden, afterall, he did sweat blood. That is an indication of very extreme stress. Appropriate really, when one considers the trouble began in a garden, the final conflict should be resolved in a garden. It seems to me if there was ever a time to function as God and extricate Himself from the torture He was about to endure, that would have been a good time to do it. The only other time I can think of that may have seemed to be to His advantage is when He was on the Cross and they were chiding Him to save Himself and come down. (Luke 23:35-39)
Here, I suppose the most popular answer might be, 'within the desert,' but Jesus didn't hesitate to be strengthened by God's word when He was tempted there. What about at that time that He cried out, "My God, My God, why have you forsaken Me?"
Now, .... I've heard the explanation that this is the moment when He was separated from His Father, that the Father 'turned His back on Him' but, ...well, I find this a bit difficult to accept, without just 'taking it to be true,' Of course, and there are good reasons given to believe that, I've heard them, but the biggest hurdle for me in accepting this view is that Jesus said cried this out after He had said, "I thirst."
And God word says, "When the poor and needy seek water, and there is none, and their tongue faileth for thirst, I the LORD will hear them, I the God of Israel will not forsake them." (Isaiah 31:17)
So, was this actually the point that the Father turned away from Him, or rather, the closest Jesus came to actually 'losing faith' and turning away from God as (intimate) Father to regard Him as (distant) God, as I think Adam must have. Thus, this is why I wonder whether Adam actually knew God as Father even though Adam is known as 'a son of God,' because, after that moment when Jesus cried that out, "My God, My God...", even as He was feeling uncertain whether God was with Him, even then He said, "Father, into your hands, I commit my spirit."
I have a whole other view of His being forsaken on the Cross. I don't believe the Christ ever came close to losing faith and that His scream of being forsaken was in fact born out of perfect faith, not doubt. Therefore I can't see it have any relevance to the issue of Adam's perception of God as Father.
In regards to that question, I can only look at us and while we do not know our parents as parents from an intellectual standpoint, we do instinctively recognise them as being distinct from all others even as a small babe so maybe something similar occurred with Adam.