It's ok to run out of time with 2-3 questions left as long as you're accurate with the 22-23 other questions. If you're running out of time and missing 10 questions total, then timing should not be your focus. Focus on accuracy.
I'll be 23 when I enter law school (22 now), though was trying to enter back when I would have been 20. Ended up getting a couple good years of extra work experience, which has definitely helped with the LSAT.
@"Michael.Cinco" thanks for the help! I think what you mentioned was another question. 88.4.22 talks about teenagers, environmental factors, sports, etc. would love your thoughts!