Well I believe that the 1000 documents, especially the SC is not at all useful, for the following:
1) There is no explanation of the answers, without, which these are of no use at all. I had done 1000 SCs last time and it didnt help.
2) There a lot of mistakes, I realized only after lot of questions from the OG, which were there in the 1000 SCs had a different answer.
So I believe there is no point going with unofficial material. I believe something like Manhattan online course etc., should help. I had used the
Manhattan books, it helped me get better than before, but I still couldn't get through 700+. so need help from you all to figure out what to do, to get there.