It is devastating to know you've got a disease for life. We talk about "sweet tooth" but is it a real craving, or is there a "boredom factor?" We snack because its easy, & social, like smoking used to be.
Changes to diet are forced on us. It will be beneficial to all the family to adopt the same diet. I used to eat significant quantities of biscuits. Now I keep a Quality Street tin full of nuts. Fruit - NOT fruit juices - is also a good idea. You can make desserts from gelatine, custard powder, etc, sweetened with saccharin or other non-sugar sweeteners - NOT fruit sugar. No-added-sugar squashes added to gelatine or vegegel make acceptable jellies, & drained tinned fruit can be chopped & added. I do occasionally have one spicy oat cake (Nairn's biscuits) - 6.5 g carb. A 1 cm cube of cheese can also meet the craving for a sweet.
I have a daily total of 100-130 carbs & can keep physically active. I just cut out most of the carbs with my main meals & increase the veg & protein.
My daughter-in-law kindly provides me with a "diabetic" Christmas package each year - diabetic chocolate, jam, jelly. etc. These take a very long time to eat, as the diabetic sweeteners are effective laxatives & all carbohydrate ingredients are digested to blood sugar. I wish she wouldn't, but I wouldn't offend such kindly thoughts & actions. Diabetic foods are not recommended by any diabetics.