Sadly the vague and inaccurate “normal” is all too common. If you can get the numbers you’ll find out if it was indeed a sudden change or a more gradual one.
Again depends how you modified your lifestyle how effective at blood glucose control it will be.
As I said above it’s possible that you too are LADA but til that’s ruled in or out lowering carbs further is imo a good option. Maintaining weight on low carb is achieved by eating more fat and protein not just cutting carbs and failing to replace them. You say about doing it safely. What concerns you?
