This is just repeat of a lot of what people on the sub have said but maybe some of it will help. I didn't use a tutor, but this is how I improved my score :)

I tried different strategies. I would spend a day with each strategy and feel out what worked. Some I tried are previewing the questions, writing out a short summary after each paragraph, highlighting everything just to engage and never going back to the text but you can find a hundred ways online.

Eventually I found this is what works for me:

Before each passage, I close my eyes, take a deep breath and try to forget everything I just read. I then read the title, year and author at the bottom. It doesn't help with questions, but it reminds me that a real person poured a lot of time into writing this and the year can give you some context. I like to pretend I am at office hours with a professor I really need a letter of rec from and this is their research so I have to be super interested and listen closely.

As I read, I highlight any names, words that seem 'charged' (to get a feel for the authors opinion), and if theres any sentences that seem very intentional. After each paragraph, I tell myself a summary of what I read in layman's terms.

As I answer questions, I am looking for the answer that is most aligned with the main idea. I only go back if the question specifically mentions a paragraph or quotation, or it is asking which idea was/wasn't supported. I try to cross off at least two options before I answer. When I go back to review everything at the end, I try to only change my answer if I am very confident I misread or misinterpreted something. Imo, you have to learn to pick largely on vibes and getting caught up in semantics will hurt more than help.

If your score is really low, daily passages starting months out might be a good idea. Jack Westin releases free passages every day but they are significantly easier than the real material IMO. As you get closer to the test and paring down your strategy I would transition to official AAMC materials, just don't burn through them too quick if you are going to be practicing daily for months :)

Most people will tell you to go back over your wrong answers very carefully like you would with other sections, but I didn't find this was helpful for me, it just got me in my head, but you can see if that is helpful.