I gave myself total freedom the first week (and I ate a load of carbs/cheese/sweets)

Then I started using a fitness app (MyFitnessPal) try replacing ice cream with sugary and filling fruit (bananas/mangos/dates are great) Home made meals, plenty of veggies (buy a steamer, it's delicious 😋) homemade salad dressings. Foil cooked chicken or fish.

You don't have to completely stop junk food either, just work your favourite snack into your day/week.

One addiction will kill you (alcoholism).
Sugar is probably not the best as a diabetic, but remember that it's not alcohol.

Perhaps try some healthier sweets, fresh fruit comes to mind. But dietary advice is bordering on medical advice especially if you're diabetic, so I won't go there.

Just offering you some encouragement.

Wrong. Sugar has been linked to cancer which will definitely kill you.

Using sugar to help you get through the early days of sobriety is fine. That's what I did. I just don't want people to make the same mistake as me and turn it into a long-term thing. It's better than drinking, yes, but not by much!