First off you should be very proud of your bravery. Some of us can’t even take classes because of the immense anxiety of having to speak aloud. I’m bilingual myself, English is my primary and Spanish is my secondary. I’d love to perfect my Spanish with classes but it’s crippling like you said. English was once crippling for me when I was young, I’m 34 now and spanish cripples me like English did back when. Where I work, they look to me as the only spanish speaking guy there. Stay on top of it and don’t give up. You can do this! I’m sure your class wants you to succeed too!