Hi. Yes, it sounds like it may well be LADA. I finally went onto insulin when the GP realised I wasn't a T2 (slim etc). My DN tried just Basal (Levemir) for a few weeks but decided to add Rapid (NovoRapid) as well as it was obvious I was behaving as a T1 and needed meal-time shots. Perhaps you also need Bolus added? Your high morning readings, though imply the Lantus is too low and perhaps that simply needs increasing but avoiding hypos of course. The GAD and c-peptide tests may help diagnose Late onset T1 but in practice as you are already on insulin which a T1/LADA needs anyway, the solution would be to adjust and/or add to the insulin? Good luck with the endo anyway.