As a long time literature student, and a heavy reader, I enjoy consuming a lot of philosophical content on the daily.
However, I'm not sure if I will be able to do Philosophy 3/4 without 1/2, but I have convinced myself it will be fine as it probably won't be in my primary 4 anyways, and it doesn't scale a load. Still worried, though, since I am doing it via VSV (distance learning online) and I have started downloading 1/2 textbooks and content just to feel less underprepared. ANY tips or advice, especially if you have taken philo, please let me know!! Much appreciation 
Also- I've done Extended Investigation with a great teacher so I am already decent with critical thinking/reasoning aspects of philo, but I am just not sure which vital components I need from 1/2 in order to not fall behind for 3/4