@SamD1994 - Obviously as a T1, you usually have quite a bit of flexibility, in thers of how you eat (provided you bolus accordingly), however, having expressed a desire to explore a lower carb diet, I would just like to post a couple of things to consider.
Firstly, if you intend to alter your diet a fair amount, please ensure you test a lot, to ensure your bloods remain in safe ranges. As you might expect, lower carb consumption can lead to less insulin use, but it can also lead to lower blood sugars; particularly whilst your body gets used to things and whilst you get used to dosing differently.
Secondly, if you are considering a step change to your diet, it could be worthwhile considering a steady, may some might think, slower approach, as some folks have found their eyes can be impacted adversely, usually in the shorter term. As you have already had a skirmish with the Opthalmology chaps, you'd likely want to limit putting yourself under to much strain.
If I recall correctly,
@Mel dCP reduced her carbs a lot and has had great outcomes, but I also think she might have had something show up on a routine retinopathy screening, before it resolved itself.
Mal, I do apologise if I misremember about your eyes, but I feel certain your other health outcomes from reducing your carbs were excellent.