Feur could probably explain this better(shes the one with the degree in sports medicine) but here goes
What your trying to avoid is high starch/carb/fat foods like pasta,or ground beef(oddly steak is not that high,but ground beef is) and pork by all means
Youll need to put in the lost protein/iron somehow
Also the creatine will help you bounce back faster from your workouts,and to shave that much off,youll need to train your butt off

For the love of god though,keep yourself heavily hydrated while using it.
I havent checked,since we no longer use it,but I dont know if Andro is banned yet,but that has even greater dehydration issues.