You have plenty of time to get in shape for the race. Ride as much as you can, practice your techniques, enter the race and have fun. You will get the experience of racing and also meet people to ride and train with. Don’t put this race off. I put off entering races for 10 years always with an excuse of not having enough time and I regret that 😢 . I did my first race this month and had a blast 😃 . Also try to find out who else in your area is racing and ride with them if possible. Best of luck. I’m sure as heck not a pro but I hope this advice helps.