God says HE teaches using parable. The Bible says that a day to the Lord is as a thousand years, and a thousand years a day. The parable of creation is that God didn't just snap fingers and “zot” the world into creation; neither was it the work of a lifetime. God rolled up sleeves, worked the equivalent of a man working six days, then rested for a “yom”.
What does “morning” and “evening” mean on a day without a Sun anyway? Why would a “yom” without a Sun be 24 hours? What is a “day” when there is no Sun?
And you have just agreed that God worked a six day span. And you have presented it as if you need to affirm the six days of creation and the one day of work.
So...which is it? Is it idiotic or is it what you believe?