This might be an unpopular opinion, but I think that reading random articles to build up your "reading skills" is largely a waste of time. Yes, the ability to read and understand what you are reading is important, but it is a skill that most pre-med students already have developed by the time they are ready to take the MCAT. Their reading comprehension skills may not be perfect, but it's hardly going to change over the course of six months of reading a few articles each day unless those skills are starting abysmally low. I think it is far more important to try to understand the logic and reasoning of the AAMC/MCAT.
I took the SAT/ACT and got excellent scores in the CARS-equivalent for those tests. When I took my first practice MCAT, my CARS was above average, but it was far from great. I spent a little bit of my study time really dissecting how the AAMC structures its MCAT passages, questions, and answers. By focusing on understanding their logic, I was somewhat able to predict what types of questions they would ask based on the passage and predict a few of the answers that I thought would come up in those questions. I obviously wasn't able to do this every single time, but there is a reasonably definitive logic pattern that the MCAT uses. By trying to understand that logic pattern, you can quickly eliminate answer choices or use heuristics and intuition to make educated guesses of what answers to eliminate very quickly. That saves precious time, which allows you to go back and find the concrete example within the passage that allows you to select or remove the remaining answer choices. It also allows you to focus on the important things when you are reading the passage. For example, you will learn to highlight names or years, which are often asked about. Speed is everything in CARS, so learning test logic is really important. It's what helped me greatly improve my CARS score.
Yes, if your reading skills are weak, I do recommend reading whatever you can get your hands on, but I'd prioritize test logic for CARS. Unlike B/B, C/P, and P/S, there isn't anything you need to memorize before CARS. It's not a rote-memorization or plug-and-chug formula. Everything you need to know is within the passage, You just need to learn to reason as the AAMC does. Obviously, the gold standard for doing that is the AAMC material like the CARS questions and the FL exams. Second to that, I recommend UWorld and Jack Westin.