My daughter worked for 3 years setting up a list of outside scholarships to apply for. She had grades similar to your child, with excellent volunteer (raised 3 Seeing Eye puppies, among others) and leadership. Great recommendations, engaging essays. She is not a minority nor are we poor.
She ultimately brought in 8,000, and has since added to that total by winning additional scholarships at the departmental level in college.
That was with all that prep work and hitting every deadline. It is not an easy way to pay for college. We did feel it was great return on investment - she also learned a lot about project and time management - so win win Still it was no slam dunk way to pay all college expenses, and I still want to laugh every time I hear a clueless person say “There are so many scholarships that are so easy to get!”
From her experience I can tell you most of the scholarship applications are closed by now. In our area local ones were just opening and applications due by early March.
Are you trying to fill a 3K gap times 4 years (12K total) ?