I do Aerospace Engineering and the maths in 1st was pure maths and formed a 1/3 of my year. There was so much to learn but I did a good few hours a week and it all came together when the final degree exam arrived. I think i got a C for the entire maths module. In 2nd year we have 4 maths modules (ODEs, PDEs, Fourier Series, Matrices, Complex calculas, Vector Calculas, Line Integrals etc etc). It is harder than 1st year but I just kept the same study idea and I have sat the first 2 maths modules in December and got an A and B for both so you should find it getting easier if you keep on the fundemental topics you get taught in 1st year. All the 2nd year maths builds on top of the 1st year maths so you need to know it, don't put it off. Just put in a good few hours every week and ask the lecturer at the end of class with anything you don't understand. At my university, they are more than happy to help.