Most of my adult life I have been cooking for a juvenile diabetic so am used to exchange diets etc. I would make special desserts for my son that were geared specifically to his exchange diet. However now my brother who I care for has been diagnosed being a borderline diabetic but has no set diet just watch the carbs and sugar intake. I have been working on my regular baking recipes to reduce but not totally eliminate all sugar. I plan on posting some of my recipes and how I have adapted them and still enjoy them myself. I had some lemons that were getting old and DB loves lemon are so this is what I made and I even liked it with no sugar.
5 cups water divided
1/2 cup splenda
1 cup of lemon juice
Since the original recipe called for 1 cup of sugar with one cup of water made into a simple syrup, I put the splenda into 1 cup of water but it dissolved immediately I didn't have to heat it. Added the lemon juice and 4 more cups of water and it was just perfect. Not too sweet, not to tart.