There are many ways to keep up with the Greek that you learned in seminary. If your way is not working for you, you might consider signing up Rob Plummer's "Daily Dose of Greek." Plummer is a professor of Greek and New Testament at Southern Baptist Theological Seminary. The plan is fairly simple. Sign up by email and starting October 1, you will be emailed a link to a two minute "daily dose" video five days a week. You can check out the website and view the introductory video here. There are also resources available at the website.
HT: Brandt Vanroeckel