I hope things go smoothly for you Ralph 🙂 It's funny you mention treacle sponge - I remember when I was in hospital at diagnosis, I was in for 8 days so sampled quite a lot of the food. We were given a menu each day to choose the following day's food, and options were marked whether they were suitable or not for various conditions. The ONLY thing that was forbidden to diabetics was treacle pud and custard! 😱 With hindsight, it's no surprise that my levels were rocketing up to 25-30 mmol/l after eating! I was starving all the time (the effect of getting insulin after a long period of not getting enough, and a big chap in another bed told me how to get more than the standard portion - just amend it on the form! So, I asked for chips AND mash, or three weetabix etc.!
In reality, most of the meals were completely unsuitable for diabetics, hugely carb-laden! 😱