Might end up doing a second bachelors anyway

[Lindagerr]

For the Natural science/math if you only need 6 upper level that can be knocked out with the Global Environmental Change course One upper level 6 credit course. Then you could do your other 18 credits by testing (are you sure those 18 can be any level) Race to save the planet DSST does not duplicate the course and it is easy after the course, Then you Have a choice of CLEP/DSST science exams or Straighterline/Aleks math courses you haven't taken. Good luck with whatever course you choose. My knowledge is rather limited to the NS/M or History concentrations

EDIT; You should not have to wait until after conferral to start working on this. I finished in May was awarded in june and immediately started on History before the Sept conferral.