19 credits too much?

Seems pretty typical for an engineering curriculum. My D had a very similar schedule except had her mandatory oral communications class along with her honors seminar. Most first year engineers at my D’s school take some combination of calc, physics, and chem (or CS one semester and chem the next if they are on a EE/ECE track), and two other courses if they want to stay on track to graduate in 8 semesters.

Talk to your advisor to be sure this is typical at your school. That will be your best advice!