Dual Enrollment

I messed up my first semester of college and I want to make up for it during the second semester. I picked my classes for the school I am attending and there are still a few more I want to take so I can advance further next year, but sadly I am maxed out on credits. My question is, if I dual enroll, would the credit limit sort of ‘double’?

how does taking more units than your college allows, when you didn’t do well taking the ordinary load last semester, come out as a good idea?