Thanks for your replies. I appreciate that trends only offer estimates, but it would be good to know, for instance, that a certain average level of mmol/l would get me an HbA1c of approximately 50mmol/mol. It would be like breaking things down to a daily or weekly target rather than waiting 3 months to find out that you need to be trying harder.
When I was first diagnosed in 2018 I became almost obsessed with trying to eat a low carb diet. I got my HbA1c down to 41. I thought I had it cracked. But over time, my diet has slipped back into bad habits. In the past I learned a lot about what I should and shouldn't eat by using the Freestyle Libra. I decided I needed to bring my focus back so I've been using Dexcom for the last couple of weeks. I've been quite shocked at how high my average is.