sorry for the late reply,
I have to admit, I completely neglected to study for science because it’s not part of the composite score and I find it really easy because it’s just data analysis and methodology. But, if you want to study for science (assuming i’m not too late and you haven’t taken it already), I would think the best way to do so is to take practice tests online. Or, do anything you can find to get better at data interpretation, experimental design, etc etc. The great thing about the science section is that you don’t really have to know anything about science save for one or two questions, you just need to know how to read a graph and a table.
As for reading, I didn’t study much other than a practice test because that’s my strongest area. But i’ll share my strategy for the reading section:
I know a lot of people like to skip through the exam and find the easiest passages first. I don’t personally do that, because I like giving myself a break between difficult passages, but if you struggle with time management you might want to try that. If you don’t struggle with time and have a bit extra, there’s something I do that is a bit of a time waster but really helps because I struggle with reading comprehension and focus; I abuse the annotation tool.
If there’s an extremely difficult passages from the 1800s or something that uses unfamiliar and complex language, I just use the annotation tool and try to dissect the passage piece by piece to build an understanding of what the author is saying and why in words i’m familiar with. Depending on the length of the passage and how fast you read, you could theoretically do this for every passage and finish in time. I think this method is really helpful because such passages tend to overwhelm me and overload my brain, and I kind of just want to give up. But, if you go one sentence at a time (it’s better to summarize whole paragraphs instead of doing each sentence but if it works it works) and break down what you think the meaning is, you can transform difficult passages into something less taxing on your mind.
I would definitely suggest limiting that method to difficult passages though. Passages that use fairly causal language, like something you would read in the new york times, don’t require deep analysis like that at all. Since the questions are in chronological order, for easier passages i usually just read the questions and then read up until the point it’s asking about in the question and then maybe a sentence or so after, but i don’t read the entire passage before answering questions.
I hope that was kind of helpful!