Hi Craig
Sadly many of the foods which are healthy options are not so for somebody with Type 2 diabetes. As everybody is different in how their body copes with All carbohydrates is requires a bit of effort and work to find a dietary regime which suits you. But that needs to start with reducing portion size or cutting out some of the high carb foods.
Things like potatoes, bread, rice, pasta, cereals, pastry as well as the obvious cakes, biscuits and sugary drinks. Diet mixers are fine with your whiskey as an occasional drink certainly better than the potatoes, it is often the snacks that people automatically reach for when they have a drink.
Basing meals on meat, fish, eggs, cheese, dairy, nuts and seeds, vegetables, salads and fruits like berries with small portions of high carb foods you can still have filling tasty meals.
Making some substitutions will help so cauliflower rice or swede or celeriac instead of potatoes.