While I'm not a year 12, I did both Spesh and Methods a couple of years ago, so I guess I can offer some input as well. I basically finished the spesh course, just from the txtbook, in term 1. I hardly did many questions from the textbook though, as I wanted to learn mainly from past exams. I started my first past exam at the start of term 2, and it nearly killed me. It took me about 4 hours to do a 2 hour exam. I could hardly remember anything, but that was what I had intended. From that day, I would simply take exams into spesh class and do them, and eventually, by the end of the term, I could finish the exams timely.
My methods study was non-existent, except before a SAC, which is when I would have done the past SAC to prepare. My personal opinion is that if you are confident in spesh, you don't need to study methods, at least for the first 2/3 of the year.
So I continued by spesh exams until the end of the year, having completed about 50 exam 1s and 50 exams 2s. This was far too many, and I realise that now. I had trained myself to do exams very efficiently, and of course I was able to do every question in each exam. But the small mistakes and perhaps the bad layout of my answers were never fixed. Anyway, before the finals exams, I did a few methods exams and continued to do more spesh exams even though I could finish them in half the time they were supposed to take. Please do not so many exams.
So all in all, if I could give any advice, it would be to start exams asap, and try to do only exams if possible. You don't need to be well versed in every chapter of the book before you start, because doing and learning from the exams is ample. Also, don't do too many
