1. Leave the AAMC FL 2 and 3 for end game studying
2. Take the free diagnostics from Kaplan, Princeton and anyone else (notice FREE) ... use this as a guide for where you are lacking in content knowledge; not for the score as it's irrelevant right now; content is your weak spot; frankly, MOST people's content is fairly weak going into the MCAT prep work; NOT because the people are dumb, or lack the knowledge but because of HOW the MCAT tests the knowledge. It's not a memorize and barf out the expected answer, or studying from old tests... it's a compilation of all the sciences in one passage/question.
How to review:
1. Take each and every question you got wrong and write down WHY you got it wrong; was it content you did not know? thought you knew? never heard of? guessed but got it right? Then write that down, go onto the next question you got wrong or guessed and got correct; this is painstakingly slowwwww and it should be; this is your greatest area for improvement. Presuming you've done well enough in your coursework, much of this should be just remembering the original material and reviewing it
As an example: I got an A in orgo - I did not memorize every reaction but rather learned what danced with what and what stayed away from another molecule and so on; however, I could not tell you what order the hierarchy goes in (Carbos, anhydride, esters, alde/ketone, kyne/kene/kane) until yesterday... sure, I learned it once upon a time but for the exam? nope, forgot so I had to relearn it; I also sort of kind of remember something about some water physics thingy and how gravity impacts things differently in water or something BUT to take a test on it right now? over a year out of any type of physics? I'd fail. (A+ in physics in coursework) So, I review; I make a note card, I draw diagrams, I review graphing of a/v/displacement/etc.
2. Purchase some other full length exams from EK, Kaplan or whoever to take and do the above each week; also do the section bank (SBs) from AAMC and do the above
3. Three weeks out from exam date take AAMC FL 2 and do the above ... if you are not scoring on that exam somewhere around where you want to be then you have to decide - continue for April 19 or delay. If you are within a point or 2 then take the time to review review review and then take AAMC FL3 the week before the actual exam.
You have time. Yes, the score on the FL 1 was low but it is what it is. Now you can choose to do what you must or not.