My apologies, I mentioned slow onset T1/LADA when you asked whether diabetes can progress on keto, and I think I may have done you a disservice. My point was meant to be that LADA can cause keto to stop working at keeping your levels down, not that it would give you complications while your bgs were still low.
The thing is, your hba1cs are currently pretty good (5.9% is non diabetic), and you were diagnosed at an hba1c of only 7%, so I'm personally not convinced you've had time to develop long term diabetic complications. (Though I appreciate
@ert 's point that T2s can potentially have high levels for years before diagnosis.) Also, being LADA instead of T2 would make no difference to the progression of any current complications, as the important thing is your blood sugar levels, which seem excellent at the moment. (Disclaimer, I am not a doctor).
LADA becomes an issue if your insulin production goes too low to cover your needs. At that point your blood glucose goes up. Without rising bg levels or rising hba1c, you've no reason to suspect LADA.
Anyway, hopefully your insurance will pay for any tests you want done. If you were paying for it yourself, you might be better off waiting to see if your blood sugars actually start to go up under keto.
(Repeat disclaimer, I am not a doctor and we aren't allowed to diagnose on the forums
).
Good luck with your tests.