DS160 for h4 child on his behalf

My son is 3 years old, I want to fill ds-160 on his behalf.,also i want to fill 160 for my wife, should i answer yes /no to the question.:

  1. for wife, Did anyone assist you in filling out this application? yes/no

  2. for son(3 years old), Did anyone assist you in filling out this application? yes/no

You should answer yes to both the questions