Step counter

Hi All, 

I need your help /advice.

My illness has been progressing quite rapidly in the last half a year.

(I have Primary Progressive Multiple Sclerosis). 

It is very difficult to simply walk. I attempt to walk 3 times a day but a very short distance.

Unfortunately, I need to use Rollator. Ideally, every time I go outside because I stable, fall and injure myself.

Here comes the question. 

When I use Rollator, Instinct does not count my steps. I used it 3 times, always the same result. 

Is there an add on gadget that would count the steps when I use Rollator? 

Maybe I could fit it around my ankle or something? 

It would have to be synced with my Garmin account, so the steps would be added to the rest of my daily activities detected by Instinct? 

Thank you, 

Arthur