Some low intensity exercise after a meal is a great strategy to use up the glycogen in the muscles. I'd recommend cycling, walking, tennis, dancing or swimming rather than higher intensity exercise or weights training. This will hopefully be stress relieving rather than exhausting so build it up if this isn't your normal habit. And well done on the progress so far. Insulin resistance can take a while to shift especially if you are looking at results at a micro (daily) level.
I cycle normally but haven’t over the last three weeks, due to holidays and working late. Thanks for the encouragement
Do what I did. I put my readings into a spreadsheet, and then drew graphs to show a declining value. I also used the trend analysis tool to emphasise this. Then I showed my GP and he has supported me ever since. That was 5 years ago, and I am still below Diabetic hbA1c but still diabetic. Seems your liver is getting used to lower sugar levels.