OK, now
come on! This is not your
first query and the second time you are seeking assistance with an assignment.
You now know how the forum works. Please go and select "More"->"Modify" to the bottom right of your first post above and
correct the subject title.

Hint: AWOL has done it for you, you can cut and paste it easily (if you do it in the right order).
But the
next thing I - we - want you to do, is to report
in detail how your assessment went with the previous assignment.
Having done that, explain what you mean by "I have to do it using timers." What functions
are you or are you not permitted to use? AWOL has given you the basis but it require the use of millis() (and
no other).