Hello, in this thread, I aim to gather all possible tricks to approach the actual JLPT exam / specific questions on each level, especially N3 since I signed up for the July JLPT 
This thread is not about what we do to prepare, like using bunpro or anki, learning kanji etc, but how to approach specific questions/ sections in a systematic way to maximize success. JLPT is a structured exam, which means it needs a structured approach. I did the same with other language exams to maximize my chances.
For example, in another topic someone mentioned a good approach for the reading part, which I can attest works well, I used the same in the DELE on C1 level.
This approach I used with other language exams as well, is studying as regular up to one month before the exam and use the last month only to practice the specific exam. First, I would practice the different sections separately, and after that I would do timed full exams. Once I compete a section/ exam, I go through the mistaken points to analyze them, to identify weak parts and systematic issues.
I found this page for the N3 JLPT, which is imho a treasure trove of tips, recommend checking it out.
Another page with JLP strategy tips, I recommend having a look.
Analyze your JLPT practice tests - identify what was the mistake and understand why, and understand why the correct choice is the correct one.
Analyze which sections are easier for you, and which ones are harder. In the test, go for the easy wins.
Except for the audio, you do not need to go through the sections in order.
Wherever you can, start with the easy sections first and go back to the hard ones later - even if it means making an educated guess.
After the easy ones, go for the highest scoring sections.
Do the hard sections/ lower score sections only in the end.