How do you ??

Diana • Not TTC at the moment .
How do you do well in school and still have time for your boyfriend??
I'm taking 15.5 credits with two science classes ( microbiology and A&P lecture and lab) among other classes and I feel like I started off on a wrong foot. I want to know if someone can give me some tips as to how to manage everything.
I'm having a really hard time 
PLEASEEEE