[Craig T]

Diet and exercise can bring a fasting glucose of 130 down to 99, and with dedication and diligence bring most pre-diabetic levels down to normal...But a fasting glucose of 300 is a critical high level, and more typical of a person with a history of diabetes not managing it properly.

My guess is the "Type 1.5" Dx was due to the lack of a history of juvenile diabetes (type I) and lack of a previously diagnosed type II issue, combined with these critically high test result. It's common for an overweight 53 year-old, or even a healthy 53 with family history of diabetes, to develop type II...but a 300 gl is more serious than showing up one day at 53 with a 130 gl.

Hopefully it's just a temporary acute issue and your pancreas will snap back. Whatever it is, don't mess around. See a good endocrinologist and follow his instructions.

Get better soon.