Yes I am actually doing it at the moment ! I spoken with universities they said that if you put your GCSE current grade and there is one more section that you can say you are aiming yourself to the grade that the university requires and there is a box that you need to click and it says unachieved. The university making an offer for GCSE and a level at the same time ! Just do it around November if you can not make it you can still try around June July I hope this helps and good luck to you