FL DMV written exam

I'm terrible at studying and I'm a terrible test taker. I've been taking practice tests, but I'm still worried I won't pass. Online it says 58% of people fail the FL exam the first time. I'm not sure if those statistics are correct. I'm 20, turning 21 in late April, and really need my license.

I need it ASAP, but because I know myself and my chances are passing a test I'm anxious for, I'm making myself wait 3 weeks before I go in. Hoping that taking practice test after practice test and reading up on the rules of the road for 3 weeks straight will gareente that I pass