My husband was only 73 when he died but we had everything at home including a hospital bed and all the equipment needed such as wheelchair, commode, walking aids etc and comfort cushions. Macmillan Care helped with all these things.
We managed very well on our own until he had to go into hospital for an unexpected kidney stent again and his body was too frail to recover from this. We had three days with him at home before he died. We also had the intervention of district nurses and carers to help with changing him and making sure he was moved in the bed as I was unable to do this on my own.
Prior to this we had planned his funeral together and he had chosen passages to be read and songs to be sung - tough but I knew we were following his wishes. You could ask things of your Mum like " What is Dad's favourite hymn?" to get an idea of what might be right for him.
It will be good for you to be with your Mum for it does become very tiring when you are caring for somebody full time. My children were able to come the night before my husband died and he was able to chat to them as usual. The end came suddenly even though we knew it was going to happen.
Be kind to yourself and just be there for them both when they need you.