Advice for Beethoven Piano Concerto No. 3?

I am entering a piano competition next year and I have around seven months to learn a whole concerto, (plus 40 minutes of solo work). So far I have a couple Chopin Etudes/Waltzes/Preludes/Nocturnes and possibly a Beethoven Sonata down. Has anyone played Beethoven's Third Piano concerto or have any advice on learning/playing it? Thanks.