Are you doing all this with the help of the DSN
@ConcernedRelative?
It seems that you’re undertaking a crash course in Type One management and it would be good to have your father’s medical team on board to answer queries and give advice.
For instance, does your father wait until his readings are at a certain level before he eats carbs? (For me, if I’m above 8 when eating carbs I’ve injected for will usually make my readings rise much higher, but we’re all different.)
I can also empathise with your father’s apparent anger about the demands of Type One. Type One is a 24/7 lifelong sentence. There’s no escape.
And yes, low blood sugars do cause confusion: the brain, like the rest of the body, needs glucose plus oxygen to provide the energy required to function. Without enough glucose executive functions decline. Too much glucose clogs up veins, capillaries and arteries.
Blood sugars that are too high or too low can also affect emotions and behaviour.