I agree it could be blood Sugar Have you been tested in a lab? Try having a handful of nuts before bed then again when you wake up or if you want to really test it drink something sugary before bed and see if you drag worse in the morning. Make sure you have something sweet to drink at your bedside in case you wake up shaky which means you definitly have a problem with sugar.
I found relief doing the parasite cleanse which included a Bowel Cleanse with it. I still drag in the morning but I have ever since I was a kid. Used to be nicknamed bear because of how grouchy I woke up. Hence my coffee addiction. I stop for a while but always end up back on it.
Dr. Hulda says that you might not get great results with the Liver Flush if you don't clean out the parasites first. (which you may have already done) They produce some kind of enzymne that can stop the bile flow.
I sure hope you get better results in the future or that you find your solution.