@Chezabelle - DO you have a slow cooker or an air fryer? The reason I ask is they can help make cooking simpler.
A slow cooked stew, or hearty soup can go on in the morning and be ready at dinner time when you're both in from work. In the airfryer, simple meats like chicken legs/thighs or even drummers are quick to cook and have zero carbs, so quite a saving on nuggets or most sausages (some, high meat content are OK), and are less processed than what you're having now.
With an HbA1c of 51, you probably don't have to go Ninja on it all. You can likely get a way with some basic changes.
My coeliac testing was inconclusive, but the Endo told me to go gluten-free anyway, and I have been now, for a number of years.
My T2 diagnosis came before a GF way of living, so I can't make any exact parallels with you, but my T2 had been managed by diet for over 10 years now, and I have been in remission for almost all of that.
I would be sceptical of your nurse's assertion that diet won't work for you, and in your shoes I'd want to give it a good try anyway. Bearing in mind the first port of call for medication is usually Metformin, which is known to cause (usually temporary) gastric problems for patients, I'd want to swerve that if I could.
Good luck with whatever you choose.
Welocme to the world of reading food labels.
🙂