How can you have evening and morning and days without the sun? You can't. "Day", "evening" and "morning" are defined by the position and movement of the Earth vís-a-vís the sun. There can be no literal "day", "evening" or "morning" without the sun. You are rationalizing to try to preserve your literalist interpretation. "Eisegesis to the extreme" indeed.
No, you are trying to rationalize to make the Bible fit the pseudo-scientific hypothesis.
Day is defined by a period of time (24 hours). Morning and evening are defined by the revolution of the earth (with or without the sun and moon).