Oklahoma State turned out to be the best option for all of us. Lack of a commitment to a major at the beginning of their college experience is not at all unusual. The only one of our three who had an early commitment was our oldest who is now a 3rd year veterinary student. The other son favored some kind of engineering but was essentially undecided the first two years. Our daughter, hopefully, will decide what she wants to do before whatever she selects becomes obsolete.
Every university has financial aids and scholarship representatives.
Those are usually good people to know. Financial assistance is often available but takes some effort to find. There are some helpful sites on the Internet which list scholarships associated with various majors. Your financial aids department can help you with that. For a student who is particulary strong in a given area the CLEP test might be a good investment.