Day-by-day in a sentence as an adjective

The train company wanted to move to flex-staffing that can vary on a week-by-week or day-by-day basis based on traffic models.

There is steady, day-by-day interest here on Hacker News in what the best hiring procedures might be for technology companies.

What creative ideas do we have here to help the young learner learn how to solve proportions, an aspect of day-by-day reasoning that only secondary school graduate might reasonably be expected to know?

Day-by-day definitions

adjective

of or belonging to or occurring every day; "daily routine"; "a daily paper"

See also: daily day-to-day day-after-day