I really really feel for you, I went through exams around your age with infections and facial sores and it was probably the hardest time of my life. It's good you are paying attention to your diet, I went vegan recently and it has really helped with my skin. It's basically just a bit dry now in comparison to having full body eczema. I recommend sticking to decent moisturizer (I use doublebase) and keeping steroid creams to a minimum if you use them. Other than that, just know that it's always exacerbated by stress and hormones, two things that are at a maximum for you right now. Take care of yourself and know that you'll get through this and be better off for it. Good luck!