Take different kinds of classes.
If you're in a class that meets every day, that's pretty good. You need exposure as often as possible. But you know what's better? Being in two classes so you're speaking all the time. One could be a big ol' group class that teachers you grammar and all that boring stuff and one could be a one-on-one course that gives you that individualized attention and concentration on your speech. Weekends aren't freebie non-English days, either!