Here is a web site on diet for cyclists that I found on the USAC website on 9th September of this year.
Science of Carbohydrate Loading for Cycling / Science in Sport | SiS Blog | Science In Sport Blog
This diet is for endurance cyclists but it would be a good start for sprinters and them modify it as you proceed including asking advice from coaches and sprinters at you local track.
Lots of other sites I have found in the past including on the British Cycling site and on an Australian cycling site.
Also check with your health insurance to see if it covers meetings with Registered Dieticians - I have Kaiser and some of its RDs are active cyclists or compete in other sports.