D3 Amount of merit $, can you get a full-ride?

Thank you. I believe DS can get some merit aid with his high gpa and ok act which could be added to the athletic scholarship for a d2 or naia school. D1 is very tough to break into as a basketball player as we’ve found out. They recruit very early and only from very high level aau events. I am just unsure of the d3 money situation as I know they can’t give athletic scholarships but some kids seem to get really good $.