Hint after you solve the piece above the words

I assume you know what Key 1 is from the answer to page 1 - can you see the letters of Key 1 on page 3?

Feeling stumped early in the book and needing some assistance to figure this page out. I have worked out what the numbers above the text represent but struggling to translate how that links to the text and 2 sets of lower numbers. Thanks Edit - couple of days later and I have now figured out Day 4