Sadly diabetes cannot read it's also deaf so it doesn't know the rules it shpould be following

. Sorry I couldn't resist that.
Do try to persuade them to provide you with a glucose meter and enough test strips as it's the only way to find out what carbohydrates you can tolerate, while you're trying to get them to agree, do consider buying the SD Codefree meter suggested above.
More often than not the dietary advise we're given by the experts. Is fine for non Ds but not for us. Also as has already been said , it's very individual in what carby foods it can /can't tolerate. Our bodies are quite capable of turning non carby foods into the glucose our bodies run on, it just takes the body longer to do so, which means our glucose levels don't rocket up, it's more of a gentle rise and drop.
Some of the good edibles follow
All meat is fine, so are high meat content sausages and burgers, (I like black farmer or heck sausages)
Eggs cooked anyway you like including fried , cheese, mushrooms, veg that grows above ground, some people on here buy Lidle protein rolls , I've switched to wholemeal sliced bread but normally only have a couple of slices a day, Butter, cream , fresh fish, tinned salmon, some nuts are low carb, I have a couple of small new potatoes, many people tolerate berries better than other fruits grapes are full of sugar though.
I'm afraid it is a matter of label reading, it's only the total number of carbs you need to check, don't worry about the ' of which are sugars' as they are included in the carbs.
To give you some ideas , have a look at, What did you have to eat yesterday
https://forum.diabetes.org.uk/boards/threads/what-did-you-eat-yesterday.30349/
I hope you find this helpful