Thanks BJCP for lowering your standards just enough to let me slide by to continue my unbroken streak of mediocracy!
Passing the BJCP qualifier exam with no study at all hardly counts as "mediocrity". It's a tough exam and the fact that you scraped by still counts.
It's like the doctor joke,
"What do you call the guy who graduated last in his class in med school?"
While you need to get a slot in tasting exam soon, I wouldn't be in a rush to take the tasting exam. If possible, find a BJCP training class in your area, or find an experienced BJCP judge to mentor you on troubleshooting, styles and the mysteries of filling out a good scoresheet.
Just one month of prep, with no prior training or study, is setting you up for a potentially failing score on the tasting exam, when you're obviously smart and experienced enough that you could get an 80+.