@OrdinaryDO is correct, to an extent. Each student
is different in learning style, energy, stamina, strengths, weaknesses, etc... However, in my experience (and if this weren't true, none of the test prep companies or other educational institutions would exist) there are some standards to prepping and studying for this very standardized exam.
I usually tell my students to avoid any in depth review the day they take their practice test. It may have been possible when the exam was 3 sections and ~4.5 hours to do so within a day, but now it's just not. Not if you want to get the
most out of your exam score and to learn from it.
It's a 7+ hour exam, so after you are done, score it. If you want to click through quickly seeing if there was any one passage you struggled with or a Q you were unsure of, fine. However, do not begin any in depth review. You brain needs time to decompress from the exam in order to properly analyze your performance.
The next day is usually ideal to begin analysis and review. Two or more days you run the increasing risk of forgetting what you were thinking, or what led you to a particular guess.
It is normal, especially early in your studies, for it to take as much if not more time to full review your FL exam than it did to take it. First you need to review ALL Q that you got wrong and ALL Qs you guessed on, right or wrong. Then you need to determine if your mistake was content or MCAT-related. Keeping track of this info either on paper or on computer will allow you to quickly identify trends, good or bad, and spot trouble areas.
The most important part of your review is what we call the "Lesson Learned." In your own words, WHY did you get the Q wrong. The more specific you can be, the more useful your Lesson Learned Journal becomes. You will do this for all 4 sections, which may add up to 1.5-2 days of review.
At the end, you will have a list of topics you need to 1) review content 2) do an MCAT style practice passage on or 3) both. This focused homework will occupy much of your time until your next practice test.
Early on in your studies (6-8 weeks out) a FL a week is likely fine, if not too much. Once you are < 6 weeks out, you can do a FL a week. I would advise strongly against ever trying to do more than 2 FL a week. It's not impossible, but its all about quality, not quantity. You can fill in the days between FL exams with passage practice, content review, section practice, videos, etc..... You do not want to burn out and you should be taking 1 day off per week throughout your studies. Even in med school, I managed to find at least a half day off a week where I could relax and prevent myself from going crazy.
TL, DR: A minimum of 2 days between FL exams to really get your greatest benefit from each exam you take.
Hope this helps, good luck!!!