Hi OP, I completely feel you! At the start of the year I was aiming for a 40 raw in biology but now I think even 30 sounds out of reach for me lmaooo.
I don’t fully understand the procedures behind study score calculations but from what I know, if you absolutely smash it out on the exam, and if your cohort also do well, then your SAC scores get pulled up as well. However this is not always the case. I know a friend last year who had a 70-something average in bio SACs, got an A+ on the exam, but their GAs were B+/B+/A+.
From the trend of your scores it seems that even though you didn’t start of ideal you’re improving drastically with each SAC which is definitely a good thing! IMO 40+ will definitely be hard (regardless of your SAC average, tbh), but if you can continue this upward trend I think you definitely have a good chance. Don’t give up!!