Starting over with math...Study.com, Shmoop, other?

[Ideas]

But many job listings list "CS or related degree"

so then I look at CS, BSBA CIS, or like someone mentioned the WGU IT degrees.

I guess I'm just trying to work out "can I do the math" and is it worth it. Would the BSBA CIS be considered related enough?

I think most jobs that prefer a CS degree are not going to hire someone with BSBA-CIS. They might or might not hire someone with an IT degree depending on the job, and on your experience and certifications. But IT is rather different from CS.