Dosages help!!

Okay, so I just started dosages last week. I am in an accelerated 5 week course. I took my first exam today and my score was horribleeee!! Please send tips and tricks that helped you with dosages. I did not practice as much a I should’ve, so moving forward I plan on practicing everyday. It’s just so nerve-wrecking. I hated math growing up and try to avoid it at all cost but now as a nursing student you need it!