Type 1 diabetic as well here - I do this and I can confirm that I have much better control over my HB1C (average blood sugar reading) since I eat mostly a keto and plant based healthy diet (composed of minimally processed foods). One issue that I have though deals with hypoglycemia (low-blood sugar levels) since type 1 diabetics don't just require immediate insulin after meals - they require long-term acting insulin which works throughout the day. I've had multiple cases where I lost consciousness and woke up either in an ambulance or in a hospital feeling like someone hit me with a truck and having no recollection of how I got there. There is no 'magic' in managing type 1 diabetes unfortunately. The issue with us is that our blood sugar can swing in both directions - with the lower swing possibly resulting in death.