Yes, I agree that T1.5 is likely and the docs are doing the right GAD test; c-peptide can also help. T1.5 comes on at widely differing speeds as there are a variety of anti-bodies as well as other factors that cause pancreatic failure. It has taken me 9 years to go onto insulin as very low-carbing and full tablets stopped working and my Hba1c went above 8%. In my case the GAD last year I had done privately was negative but the c-peptide showed no insulin. Your weight loss is a key indicator of T1.5. I had a sudden loss of weight just prior to my (T2 guesswork) diagnosis. I'm surprised your consultant is worried about hypos. Yes, they are an obvious risk but as long as you are sensible they are avoidable most of the time. I've yet to have one in 9 months of insulin but keep my blood sugar quite low.