Incomplete; but then, Biblical exegesis wasn’t Lewis’ strong point. Perhaps more like, “The Bible teaches us to what end God created the universe in six normal days.”
Except, the Bible doesn't say six 'normal' days, it uses the term Yom which can translate as a 12 hour day, 24 hour day, or an 'age' of indeterminate amount of time (such as "in the Day of the Lord" that is often used.)
Are you saying the Bible is infallible, and that Creation happened in exactly 6 days because the Bible says so?
The problem with the infallible Bible theory is that we don’t know who wrote much of the Bible, or when. So, like an artwork of uncertain provenance, we can’t determine whether it’s genuine. This means if we do science with the Bible, we cannot expect to be able to test our scientific hypotheses.