changing exam boards from yr 12 to yr13

hello,
my school shut down and a school offered me to do yr 13, however, in my old school i did edexcel english literature whilst in this other school they do ocr. I'm wondering if its worth doing yr 13 with ocr board (i didn't cover any of the books they did for yr 12) or if i should restart yr12??

Do you have any other sixth form offers?