ukwanderer, hello, and welcome to TP. I hope you find lots of advice, support, and information here on Talking Point (I know I have). I am sorry to hear about the situation with your father and wish you all the best.
The Dementia cafe, carers cafe, carers groups, support groups, can all be great resources and a chance to meet other people who know what you are talking about. It can also be the most efficient way to find out about services in your area.
The Alzheimer's Society and Age UK have good resources and information as well. I think the info from the Alzheimer's Society is very good and when you have time, you might have a look at some of their info and factsheets. You could start here:
https://www.alzheimers.org.uk/site/scripts/documents.php?categoryID=200120
and here:
https://www.alzheimers.org.uk/site/scripts/documents.php?categoryID=200343
I know what you mean about that feeling, of waiting for something bad to happen. I hope you are able to find a way to avoid the crisis. It's really difficult and there are no easy answers.
jknight, how are you doing today? Feeling a bit calmer about the appointment Friday, I hope.
I think father ted has a good point, that I failed to mention, about being an only child. I get a lot of people who say to me, oh, poor you, an only child and no brothers and sisters to help you with your mum, you must wish you had siblings now. Well, it turns out I've always been an only child so I don't know any different way to be and given a lot of the horror stories I've heard (here and in my local support groups), I'm just fine being an only child. There is nobody to debate with and nobody to argue with me (and nobody to take me to court and sue me, or call the police on me, or try to steal my mother's money). I make the decisions and that's that.