Is it better to have 2 or 3 LSAT scores on my application?

Does it really matter to law school admissions if you have fewer LSAT scores with an application? I am considering changing my test date (currently scheduled) from February to April, or just taking both tests. I already have a previous LSAT score, so I want to know if it would make much of a difference on an application if I had two scores or three? Should I reach out to individual schools?