I can't see how that advice would be guaranteed to help you - 'healthy' carbs - according to my testing, are still carbs and have almost exactly the same ability to increase glucose levels. Sweet potatoes actually have more carbs than the ordinary ones.
I eat what I think of as healthy carbs, but they are low carb, green salad, a tomato, celery, beetroot with coleslaw some grated cheese and boiled eggs will be dinner tonight.
It might be more effective in your case to reduce intake of those heavy carb foods and replace them with lower ones - I set a limit of 10 percent carbohydrate content for all foods. I was a full blown type 2 at diagnosis though, and have controlled it with diet only since then. If you test your blood glucose levels after eating and try to keep your level 2 hours after starting to eat to a normal level, if that is what you have ben advised by the HCP dealing with your diabetes.