Pre-season Jitters...Ugh!

So I am getting through the workout packet as best as I can. I am not out of shape by any means, but I have worries that I will not be ready for the season. The things that get me the most are the track days...I will admit, I am not the best at running 400m. and 800m. considering we are in month 2 and you have to do quite a few of them. I know it's bad, but I sometimes cheat and do half of the track workouts then add skill work, shooting, and body weight/resistance training stuff. My legs literally can not go any faster past a certain point, but I am positive that if you were to put me in an actual scrimmage or game I could do short bursts of sprints without it truly phasing me...with that last bit in mind I still have hope that all will be fine, but I am having some doubts whether or not I may die. Lol! jk. Gonna try something a little different and maybe incorporate ladder drills into my workout routine.