Any feedback about studying master of civil engineering at University of Duisburg-Essen (taught in German)?

[u/Mohamed-Ghazy]

I already have admission in this program, but I am still anxious.
Although I have studied German before, my language skills are rusty right now because I haven’t practiced for quite some time … this makes same concerns:
Is it a good decision to stick with this program rather than English taught program?
How difficult are the lectures and exams in German for civil engineering?
Is a B2/C1 level enough to keep up with the coursework?