Carbs

Glucose is a carbohydrare molecule. one of dozens of kinds of carbohydrate, not all of which are digestible or biologically active. Thus eating carbs usually puts your blood glucose level up. Starch is a polymer of glucose, which is easily broken down into its component glucose molecules. Since carbohydrates are not essential nutrients, It would seem that if you never ate them, you'd have no problems, but unfortunately, the liver makes some for us and those have to be controlled too.
Once a person understands the basic principles of metabolism, he/she is equipped to make informed decisions on their own strategy for dealing with excess glucose in the system. The choices range from "Eat little or no carbs and use minimal medication" to "Eat whatever takes your fancy and use as much medication as needed to deal with it", accepting the side effects such as hypos, or somewhere in between.
You have to find your own way, with support from your Care team. You have the right to their help, but some are very hidebound or lack knowledge and will only accept one way of doing things.
Hana

Hi. Carbs are not essential for your diet despite misinformation in the media. Fats can provide energy and so can proteins to some extent. Fats are to blame too much for the ills that carbs leave us. You can reduce carbs by having smaller portion sizes and avoiding foods that have too much sugar added. For example cakes do not have to have sugar added if you choose. My wife makes me a Molly cake (see web for recipe) that has no added sugar and relies on the fruit to provide it; yes this has carbs but at a lower level and also low-GI. So, take control when you enter the supermarket and remember they and the food industry are trying to overload you with sugar so read the labels and eat and drink what is suitable for you and not what they want to sell you. You should find that as your body gets used to fewer carbs and more fat it will adapt and the shakes will fade.