My job just trensferred me to suddenly being responsible for managing the blood sugar levels of a diabetic 5-year-old. Not without instruction, and I have been doing fine so far, but this is absolutely terrifying because it is so important. I think I can do this, but it is so scary. I'm experiencing whatever the opposite of alienation from your work is right now. It's actually an amazing feeling. Still terrified though.
I lucked out and got a lovely girl who will work with me, so I try to keep it between 4 and 8. She can easily get stuck on high levels where hormones and stuff raise the values further, so I can't leave her at 12, because she can work her way up to 17 from there without any encouragement from my part, but I never have to deal with the "I don't want to" problem, so I can just feed her dates and apple slices to keep things level without any problems.
You totally got this!