Sometimes it is not the calorie count will work Hive account@rin , if you are not eating properly.
Fresh fruits and vegetables hardly had any calories in it so it is totally safe to snack it, not to mention clean protein. I had a hard time learning it at first if we are used to scrumptious tasty food; but once that sits in you for 21 days you will start to benefit from it as your body changes to adapt to a more natural food intake rather than our current overly saturated with MSG food.
Once you start cutting off process sugar, little by little, your body will not want too much full meal all the time, but welcome "mini boosters" from time to time.
But if you do the 16 hours fast, it will be very hard at first. Don't be so hard on yourself and you will gradually adapt well. :)
Most important is, don't forget to keep your body active with exercises.
Once I find my archives I will let you know.
All the best!
ps: Do you know a hard boil egg (without any other sauce to go with it) is actually pretty good?

Don't get scared of the fat. These are good fat to push out the bad fat (deep fried, grilled, BBQ food).
You don't have to take the yolks all the time, but the whites will help. I limit it to 2 eggs a day.