Is it too early to switch advisors if I just finished my first semester as a master's student?
Is it too early to switch advisors?


If there is evidence the advisor is not the right person for you, it's never too early.  It's clear from your question that you should switch.


  Is it too late to switch advisors?


It depends on the rules of your university, but in the first semester it is probably not too late.  Don't wait until it's too late.