I have to step in with my experience here. I too am currently in hospital having been here for about 2 months for a non diabetic problem. It also shot my numbers into the 30's in A&E, so the shoved me on insulin drips. Wrong med in my case since I am very much a T2, and my body was already full of insulin of my own making, the adrenaline rush on being ill with a blue light entrance was actually preventing my body from using any insulin external or not, so the drip had absolutely zero effect on my sugars, I had to use yoga and meditation to stop the adrenaline and then they came down slowly. So for me this was proof that I was not in DKA (ketones 0.1 anyway) but deffo a T2 with functioning pancreas, but high insulin resistance, Dodgy way to find out but no obstinate doctors to persuade,
My experiance with hospital food is that it is very starchy with potatoes pasta and rice on every meal which I sometimes eat and the nurses were spoonfeeding me if I refused in the early days of my stay. I survived with high sugars as a result, but over time I have earned the right to not tick that box on the menu. They do offer vegetarian dishes as main couses, such as curry, mexican bean something, veggie lasagne, vegan meatballs, diabetic vegan icecream or vegan custard. sweetened juices and youhurt pots to name a few. And in all cases these are either very sugar laden, or spike me terribly. The vegan diabetic icecream has 30g added sugar per small pot, and the custard has 28g. Both of these have a long list of chemical ingredients, with seaweed extract being the only natural one. Obvious since we all know milk is a no no. Tasted foul and not repeated. As a T2 I find vegetarian food is a particular danger and raises my sugar levels higher than a chinese takeaway. My curries as an omnivore spike me about 1 or 2 mmol at the 2 hour PP, but a vegan chickpea currry I had a week or so ago gave me such high bgl that the hospital meter could not register it, my meter#1 read 31.5 and my#'2 meter said KETONES (ting ting). It was a blue code on the ward, and a trip to A&E again by crash trolley because I got palpitations and they thought I was having a heart attack. Nope, it was acute indegestion, but for me I will steer clear of those foods from now.
Yes they do offer biccies and cake, but those are obvious traps for a low carber, and not very appealing anyway. Say no.
The league of friends trolley gets wheeled around the wards, and that is just a kiddies dream - a sweetshop on wheels! Nothing of interest to a serious low carber, but possibly more inviting thsn the rich tea bics.
As it happens, I found out that I am actually a T2 in Remission, since I can actually tolerate carbs again. I am eating the normal hospital menu, but being careful in selecting the meal constituents. My fasting levels have dropped down to 5.7 mmol/l regularly, regardless of what the night time reading is. My high levels are higher than I want, but the doctors are happy, and this is with only a couple of Metformin for my cardio protection. I still spike to around 10 mmol/l after a bad choice such as a full punnet of grapes in one sitting, or a danish pastry or two in the canteen, But Hey I can do it now,
Hope you get yourself sorted soon, and also find your sweetspot where things start working better. I got to mine through low carbing, and I will go back to it when I get home.