That was the premise behind the newer delivery system by
https://www.mitoq.com/uk/mitoq-university/mitoq-advanced-coq-technology/
I have a friend who was on the original trial, and it seems to have had very positive effects.
(Not diabetic, but a metabolic syndrome none the less)
The price now is more than they can afford to continue with, so it may be back to the reduced version of CoQ10, Ubiquinol, again for them as well, but from their experience it wasn't as effective.
(Cheaper CoQ10 had no effect at all)