I forgot to mention that this gardenia bush is outside. It gets enough water so I at a loss about what to do.
Thanks!

Is your gardenia in the sun? They do need a lot of sun to bloom. Or are you fertilizing with a high nitrogen fertilizer? That can cause leaf growth at the expense of flowers. Also sometimes gardenias seem to have heavy bloom in alternate years. But you've had yours for two years, so that shouldn't be a factor. Sorry, except for sun and nitrogen, I don't have any ideas for you.