i'm guessing whatever u just did had made u disheartened & u think u can't do it right? thats normal, dnt worry about that now, start again. do at least 1/2-1hr an night and add that up - u'll have done 2.5-5 hrs in a week - better than nothing!
past papers, past questions, do the same questions over until u get them and come back 2 them a few days later and do them again