Hi Fiona, I am sorry you are having to ask, but from my experience I would say be as prepared as you can, in case you need to be.
As you say changes can happen very quickly and it isn't always possible to get equipment in place quickly. I kept a wheelchair in the car for a while before Mike regularly needed it. He hated it but as you know it is always evening or weekend when you need to get to hospital or wherever, and there's never a wheelchair there when you need it. I persuaded Mike to get his to make me feel happier. I understand you need a light wheelchair but is it comfortable enough when Neil is in pain? I got an extra purpose made cushion for Mike.
I also got a raised toilet seat, which he wouldn't use, but at least it was there in case. Urine bottles, which he had to use in the night as he couldn't get to the bathroom in time? Walking sticks, a few pairs, one pair left upstairs, one downstairs, one pair in the car. We had grab rails fitted in the bathroom (several) and coming into and out of the house and a second handrail up the staircase. Really we made it so he had something to grab hold of and pull himself around the house. We got a 'grabber', to pick things up from the floor as he couldn't bend down.
I read the mobility aids books from cover to cover for ideas to make life easier for him, and give him some independence. We also changed the car for an automatic although he really only drove it for three weeks, and I debate whether he should really have done that.
I would ask for an occupational therapist assessment, also have you a Macmillan nurse to ask for advice from? For emotional and practical advice the nurses helpline here is really good.
It is a difficult and emotional time, please try to take all the help you can, love Janet