Hi Little Circles,
This sounds very stressful for both you and your Dad especially as it has come on so quickly. There is a lot here that will help you. I am very aware I am giving you what may seem a long list when you have so much on your plate as well as trying to care for your little one. However, you need support and guidance and the steps below will help get you and your Dad that.
If you can, ha! adding to your list! Keep a note somewhere of all the things that your mum is doing so that you can raise with the GP and in Consultant's meetings.
Practical Steps
Support
Alzfheimer's Society
I have found them a fount of knowledge, a pool of sanity and particularly useful on local knowledge on how things work. They will also know of local groups your mum can attend to give your Dad a break which sounds sorely needed. If you scroll down the page on the link below you and put in your parent's post code You will then get the local office.
https://www.alzheimers.org.uk/
Admiral Nurses
Another site good on guidance and ideas
0800 888 6678
Age UK
Another useful group. They have befrienders - there is a charge - that they match to your parent's interests and will come to the house. This might be useful for your mum to give your Dad a break. A friend of mines MIL - a difficult woman - has got this setup and it has been a rip roaring success.
http://www.ageuk.org.uk/
POA
Sounds as though you this in hand. Make sure you have both Health and Welfare as well as Finance. Some GPs and Consultants get a bit sticky if you do not have the Health and Welfare.
Age UK or CAB can help you with these as well.
Finances.
This is chaos on wheels for you both.
There are cards where you can put on a certain amount each month which would limit your mum's pending. FX I think is one. If you have a look on the website Money Saving Experts these are discussed there.
An alternative, but more long haul, is to open a second bank account - either for mum or Dad (if he can cope with the change) and deposit so much a month for your mum.
Getting your mum out a bit more in some clubs should help limit her ability to spend.
Attendance Allowance
This can be done online or CAB or Alzheimers or Age UK can help you fill this one in. It is useful to get this sorted for two reasons. Firstly it will help fund any care your mum needs such as the Age UK befriender. It is also the first part of the paper trail for SS (Social Services) should your mum need a Care Home.
Council Tax
Once you have a formal diagnosis for your mum of whatever form of dementia you can apply for this online. Before the Consultant's appointment print of the form online and ask the consultant to fill it in.
You are looking for Council Tax Disregard. Then Mental Incapacity Disregard - charming name - not. This will give a reduction in Council tax - which again can go towards your mother's care or a cleaner.
The organisations above can help you with both of these forms which can help with stress levels.
Please keep posting here. Partly for offloading and partly because there is so much help and guidance that other posters can guide you with from their own experience.