Type 2 Diabetes and the Disability Tax Credit

I have recently found out about the tax certificate and would like some help from the GURUS here(LOL)My doctor who specializes in diabetes is an older man and has some doubts that the Tax Credit can be applied to type 2 diabetes. In addition he asked me for a list of things that would apply to the life-sustaining therapy section and the 14 hour rule. I take insulin and victoza via injection ,metformin and gliclazide orally.Any and all help gratefully appreciated and accepted.