I guess my first response would be to debug the struggles with getting around. If your PALS needs a mobility device to be, safely, in the places you both want to be, I'd get it. Not knowing what that is, it may not require clinic. Let us know how we can help.
The approach is to do what you both love to do, until you can't. It may be in modified form, like watching streaming games or concerts instead of in person, or video calls with far-off relatives when you can't get together, but almost every passion or activity has an "adaptive version" -- through teaching, coaching, mentoring, help with specific tasks, changing schedules, different equipment/projects, possibly moving or renovating, etc.
Those adjustments can reflect the knowledge that ALS progresses, and being able to talk through scenarios together, whatever the mode of communication, so that neither of you is walking on eggshells, suffering in silence, or compromising what shouldn't be.
Obviously, you don't tell each other everything, even pre-ALS, but you're still a couple, or whatever you were at the start. ALS can't change that unless you let it.
Best,
Laurie