I Am Nothing

With many separate courses you can also get another shot at the exams later (if needed; You might still pass). That would give you more time to learn and maybe follow classes too. How much time do you have left now?

Just see how far you get and, if you don't make it now, go for another round later. Do you have much time left? Maybe you could benefit from free course material online.

Then all you need is good learning material and maybe some tutoring. What's the hardest part about the language to you?

Make learning more fun instead of just hard work. Maybe you can find Donald Duck magazine issues in Dutch. That's all very basic and still language as it's actually used, and the pictures make it easier to understand.
There's also a Dutch (cartoon) movie online that's easy to follow even if you don't speak the language. The title is "Als je begrijpt wat ik bedoel." ("if you know what I mean.")
You can find it on youtube. Stuff like that is easy to learn from next to the more dry material.

Here's that movie:
https://youtu.be/36KmXvqq0Zc

Um it's not for school

A whole lifetime

Everything