Filing Indiana State Return for an Internship

Dear Team,

My son had an internship in Indiana for less than 3 months last year.  His W2 shows taxes paid in Indiana but he lived in Florida where no state filing is due.  He earned less than 9k during the internship.  Does he need to file an Indiana State Return?  Further, Do i need to answer the question on Turbo Tax that he lived in another state to the affirmative if it was less than three months?  His official address was never changed to Indiana.   Thanks.