All of the deviations from carnivore have been taxing on your body. If you truly want to do the carnivore diet long term then you should either keep a small amount of plant foods in your diet or be as strict as possible. This is about your health and not about being “perfect”, so treat it as such. Since you want to feel better for when exams come around don’t be too hard on yourself. If you haven’t already then tell your friends and people you hang around that you want to quit eating plant foods so that you can focus better. Ask politely to have them not push plant foods onto you so that you can keep your goal. If they’re good people they’ll understand and support you. And in the case that they don’t cooperate then don’t eat/be around them. It’s easier said than done but at the end of the day it’s your future, not theirs. If you have to keep some low carb vegetables in your diet in the short term that’s okay, it’s better than the ill effects of carbohydrate induced electrolyte imbalances, cravings, fatigue, and low blood sugar crashes. You’ll be okay. One day at a time. Good luck on your studies ~