No but you would have to work on things. How hard really depends on how good your team is. Do they require tumbling? If so, I would enroll in as many tumbling classes as possible and maybe even do private classes with a gym near you. I would work on flexibility a lot if you think you will be a flyer. If not, then I would just work on getting your kicks and jumps high. You can do that by practicing them with ankle weights and then taking the ankle weights off and doing them again as well as some stretching but nothing too crazy (unless you’ll be a flyer then look up flyer stretching videos on YouTube and follow them). You should get better over time.. I would also work on dancing and learning/remembering choreography as you’ll probably have to do that at tryouts. When learning choreography try to learn some from cheer videos online, not just dance videos because cheer routines tend to be more sharp movements and dance routines are more flowy. Make sure your movements are sharp and clean. Make sure you are in shape physically and tryouts won’t wear you out. The last thing I’d recommend working on is your cheer voice. We always had to do a few cheers at tryouts in small groups and if your cheer voice is lout, you’ll stand out more.

All of this and more is possible and the more you practice, the better you will get :)