It sounds like your new diet is working well in that it is lowering your glucose levels. It is however very important at this stage to liaise closely with your doctor and team so that they can adjust your insulin doses appropriately in the face of the lowered glucose levels as it is important to avoid hypoglycaemia(low glucose levels). The amount of insulin required at present will be lower and will vary as your weight changes, so there is not a formula for how much to use, but your doctor will use their experience to tell you how much to reduce by.
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