Hi sorry to hear about your hospital stay, I also had a dreadful time in hospital last feb I had pancreatic cancer and had my spleen and half my pancreas removed, they very really checked my bloods, so much so they asked me how much insulin I took repeating my self several times I only take metfomin, my sister in law was taking my reading after two days of having sugar levels in the high 20 early 30 she spoke to the doctor who said she wasn’t aware I was a diabetic. I was the put on a sliding scale and after 7 days in hospital was then given insulin, I am now a t3 c diabetic. And have adjusted my insulin to suit my , with my sister in law help good luck