One of the things I've learned from using a Freestyle Libre is that going off plan and eating a bit of carby food leads to glucose spikes in the following days when I haven't touched carby food. I have no idea what is the process there, only that I have observed it.
Just from your sig I can see you were barely full blown to begin with, only 51 A1c at diagnosis.
Since then you've stabilised in the mid 40s.
I take your bona fides on diet.
So the other variables are exercise & weight, how much wiggle room have you there ?
Yes I have been able to maintain in 46-50 range since diagnosis. I could make my diet a bit more controlled.
As for exercise, lockdown meant I am only able to do home based workout and they are not as good as what I was able to do in gym so yes exercise has slightly been down and eating carbs increased.
Research using rodents showed that meals consisting of both carbs and refined fats led to the worst outcomes - both heart markers and diabetes got worse when they ate fatty&carby meals.
So maybe stricter low carb would help?
My cholesterol total went up a little after I went low carb but both triglycerides (which had been 'high') and the ratio were better.