What correspondence courses can I do to max on points?

I’m a 68C and have been promotable for quite some time. I have done the 68WM6 prep and sustainment courses, 68E and a few other small correspondence courses but am having trouble finding other correspondence courses to do. I need roughly 125 more hours of courses but with CBRNE being discontinued in the last year, I don’t know what else to look for. I did attempt to register for the 68D sustainment course, but it hasn’t worked on atrrs with multiple attempts on different computers. I’ve gone to leadership to ask if they know what courses I can do, but they don’t know either.