Good luck man, honestly, it takes nads to compete. Just understand that the guys you hear about "growing into a show" are the absolute genetic elite and have some serious pharmaceutical backing. The diet has to be perfect, the training has to be brutal, but even then, 5 weeks out = aint shit happening in terms of accrual of new muscle tissue. Good job so far from what you've said but just consider maybe waiting untill a slightly later show and come in at your true best. Having the time to really wither away the fat and then totally dial it in will only help your success. I'm all for people "competing for themselves" and all, but let's be honest, not intending to win is just unAmerican haha. You want to bring your best package and be ready, not try to stuff 10 pounds of shit in a 5 pound bag so to speak by trying last ditch efforts to catch up when you're behind in your prep. Being ready early, having extra time to dial in carbs and water manipulation, not to mention more practice with your routine, and just crusing in is a better route.
Lastly, please don't be the guy who relies purely on gear and other compounds for muscle building and fat burning. I totally understand it's a huge part of physique sports, lol, and the main part of this particular forum area, but the guy who has a solid base, learns his body when it comes to training, nutrition and rest, and then adds in the nitrous is much better offin terms of both results and health. Sorry if I came off preachy, I just like to see people succeed in their endeavors. Good luck and be safe