Advice on living life with an elderly dog

My dear friends just stopped walking together. I'm afraid they took it in turns to have outings. It was at least 3 years - the dog was extremely "vocal" and cried regularly even if only one of them was missing. I think introducing dog-sitters now whilst you have a chance is a great idea.
Their dog was no.1 in that family

How about a doggy carrier if she's not too heavy. My DD has one for her Cavachon also a bike box. He still loves going everywhere with the family.

What about something like this? I live near Hadrian's Wall and have seen dogs being carried this way by several hikers.

I'm another who would recommend a buggy to take her in on your walks. Then she can walk when she likes but rests when her legs are tired. She'll still enjoy being outside and with you.

I see someone with one of these walking their dog.

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Our Patterdale was put to sleep in February this year, she was 16.
Up until January of 2021 she could walk miles with us as we tramped across the Yorkshire countryside.

Her last long walk was about 10 miles, she came home and barely left her bed for 3 days.
Even the sight of boots and sticks no longer set her off jumping and barking.
We went on our hikes without her.
She was happy with just gentle walks around our local area, she would put the brakes on when she had had enough so we turned around and headed home.
Sleep was by now her favourite pastime.

Our last holiday with her was this Christmas, we had a week in the Dales, she had gentle walks and the family around her with lots of turkey titbits.

Her last fortnight was starting to look grim, she had lost the light behind her eyes, was becoming incontinent and didn’t want to go out.
We knew it was time.

We all have such happy memories of dear Nell and know that she lived her best life with us.

Let your little terrier just be and enjoy her company.

Thank you so both much for your suggestions. I will look into both options. I do like the pushchair idea very much.

Your idea DillytheGardener has made me think I could try to find someone else in our situation and that we could dog sit for each other...then the dog would get to know the other dog and people and we wouldn't feel so bad leaving her.

Could you have something someway between a pushchair, a wheelchair and a pram onto which you could place her in a basket so she can be with you without needing to walk?

Yet light enough so that as the need arose she could be carried by one of you while the other of you lifts the "buggy" over a kerb or whatever.

Unfortunately it’s doubtful she will want to become active and accompany you both in your adventures anymore. If you can afford it find a good pet sitter. That can come to your home and on days/weekends/holidays you aren’t home, and take your dog on a couple of wee walks and feed it. We do this in our dogs ‘retirement’ years so we can still live active lives.