WHEN DOING THE CKD, ON CARB UP DAYS WHAT KINDA CARBS CAN I HAVE? IS STUFF LIKE POTATOES,PASTA AND FRUIT JUICES ALLOWED? CAN YOU GIVE ME A SAMPLE OF WHAT YOU MIGHT EAT ON THOSE DAYS. AND CAN MY CARB UP DAYS BE ON FRIDAY AND SAT CAUSE ON ATKINS IT SEEMS I ALWAYS MESSUP ON WEEKENDS, SO I THINK CKD WOULD WORK BETTER FOR ME. THANKS