Any ideas on what I'm doing wrong?

[Drummer]

Regarding the lactose/dairy production have you seen this https://drc.bmj.com/content/8/1/e000826
The study's conclusion:

"Conclusions Higher intake of whole fat (but not low fat) dairy was associated with a lower prevalence of MetS and most of its component factors, and with a lower incidence of hypertension and diabetes. Our findings should be evaluated in large randomized trials of the effects of whole fat dairy on the risks of MetS, hypertension, and diabetes."

What are your thoughts on this or how much do you think the dairy intake helped your sugars?

The question is put rather oddly.
The intake did not help my sugars.
By eating foods with a natural, not adjusted, balance of nutrients I am able to prevent my blood glucose levels rising even though my ability to deal with carbohydrate is impaired.
It could be argued that the cheeses are not full fat, as we are not used to eating cheeses with the full amount of fat from the milk - modern cows produce higher fat milk some of which is removed before being made into cheese, as a rule. I make up for that by adding cream to my coffee, so in as much as consuming dairy can be considered natural at all, my intake is natural.
Having chosen the foods I have on my menu, I find my blood glucose levels are normal, but I had already developed type 2 diabetes, quite severely when on a GP generated diet of low fat high carb foods. It might be argued that the lack of dairy fat was a contributory factor - but personally I suspect that the high carbohydrate content was far more significant.