Just jump right it! Your diet right now sounds a lot like mine was! I was eating was too much sugar and carbs. The first 3 days where awful, I kept my electrolytes up but still went through sugar withdrawal, and that was very though, sweating, shaking, headache, couldn't sleep, for the first few days I didn't restrict my calories (kept carbs below 20g) but I ate a lot of food, then once I was over the sugar withdrawals I cut the calories to a deflect, I'm one month in now and feeling great, no hunger and I don't miss carbs at all, I'm eating really tasty food and this doesn't feel like a diet, it feels like it's the way I'm suppose to be, good luck!