Dont Worry if you are failing in PCC... The imformation you provided is very less... and I am Assuming that you dont have aggregate in both the subject.. I would advice you to give a single group at a time this surely helps. afterall its better late than never. secondly if you are desperate in giving both groups together you definetly should try your hand at more and more papers dont just give your papers but also analyze and correct your mistakes. Also use new books DON'T read from your old books as in them you will read what you already know. PM me the books you use and I will advise you further.