I have DP too some morning I am 7.7 then others 6.7 . I only tested this morning because i had slept really well and wanted to see if it had an effect and it did , i decided to test once a week during the day to check all is well, because i am eating the same foods and all the readings have been consistent , and now i have proved that a good sleep gives me a good reading in the morning .
I want my A1c to drop down to 34 like a lot on here , but i have doubts it will , next A1c in August this year so will see. I don't think i am losing weight now either it seems to have stopped although i did buy a size 18 dress yesterday and it fits perfectly and i was a size 24 this time last year .
I don't worry about the DP as it has been this way since doing LCHF .