You could try making them now and start to decrease the amount of carbs
in your diet. Instead of the candy bar, you could try a snack high
in protein which will not cause your blood sugar to spike and then drop. Some snacks that are high in protein are hummus, peanut butter, you can dip veggies or fruit. There are also protein bars which are quick and easy like a candy bar. However, be careful with these, many are so loaded with sugar they are candy bars in disguise.
I hope this helps.