Oh oops my school does precalc in 8th so can't really relate. I'll assume you're talking about the AMC10/12. Here are a couple of tips from Hurdler:
In general, there are 3 things to work on
At this point it may be good to focus mostly on #2, #3. For some of you, you should just mainly focus on #2, #3 at this point, to consolidate what you can do with the math you already have "learned".