Ode to Caffeine

[Nbafan]

O caffeine, O caffeine
Fueling my fantasies
Faithful by morn, faithful by noon
What would I do without you?

O caffeine, O caffeine
Curbing my dreams
Make me jump, make me shake
What wouldn't I do without you.

O caffeine, O caffeine
Coloring my view
Swear by you, swot by you
What would I do without you?

The beginning is definitely repetitious but that is not necessarily a bad thing. That said, I really like the way you have switched up the last line of each quatrain and, if you can do something like that with the first lines, it might be beneficial.