OP- we aren’t being hostile and apologies if you think we are.
But most of us have more recent experience with various loan programs than you do. It’s FANTASTIC that loans made your professional life possible- that indeed is what the programs are intended to do.
But currently-- your numbers are off. And therefore, the gap you think needs filling is significantly larger than the gap you think you need to fill.
I was on the board of a foundation which provided last dollar funding to students in our community who needed to fill a gap. The amounts were modest however- a thousand dollars for lab fees plus books; $800 for a laptop and activities fees. But it’s worth googling “Education scholarships” with the name of your brother’s town just to see if there are community groups funding in your area. These grants tend to be hyper local… your brother’s guidance counselor may know of a few.
Good luck.