DP is a real pain in the a**e. I find the quickest way to get BG's down from DP is to actually generate a controlled insulin response to "get things moving". So when its a problem I'll have a few berries in some full fat Greek yogurt and let the sugar in the fruit do its stuff. Around 5g of carbs in the fruit is all I find it takes. If its really bad a brisk 10 minute walk will also help.
It seems to be a very fine line between bringing DP down or pushing sugars even higher for me. 2 or 3 grams can help bring things down in the morning but 5 will send me higher. It is very frustrating.
Difficulties persist even though I am not overweight, eat well and EXERCISE. Odd. But seriously, thanks for all the helpful posts. I have switched my exercise to the evening, eat a small supper of a boiled egg and try to sleep longer - which is not natural for me. First thing my levels are now down to 7.6 ish - but dropped to 3.6 two hours after dinner. Back to docs for a medication rethink.
I found that I needed multiple days of at least 16 hour fast to help lower fasting glucose from 7-8 mmol to a consistent 5.5 mmol. That means last meal of the day around 2pm...then breakfast around 6-7 am. That has kept my fasting level stable around 5.5 mmol for the past year.
The only time that I managed to improve it further to < 5.0 mmol was when I went on a 3 day water fast. But it didn't stay at that level for long once I resumed normal feeding, dinner at 7pm. So I am still back to 5.5 mmol.