The Eat Well Plate is good, but aimed at a 'normal' person's diet. When I went on my Xpert course, it was recommended to cut that down to 5-7 portions from the carbs side (avoiding white carbs) which is roughly half the recommended daily amount, and to increase from the veg side to compensate - although keep to 'above ground' veg as they're generally better. In gram terms, this is about 100-130g a day. As long as you look to either up your fat or protein intake a bit to cover the lack of energy you'd usually get from the carbs, you're ok. Of course, this is just a starting point - you still have to look at what you're eating to see of that's acceptable to your personal tolerance level, but I found it a good place to aim for to start with to help get used to my carb reduction.