OP said "we", so I assume he has a spouse or whatnot, so make and appointment for you and your spouse with a physical therapist and have the therapist teach her to get you up and down the stairs in the chair, and not to be embarrassed to ask others for help, but it is important for her to know how to do it, and how to use the help.
Also, get some forearm-crutches. Do not dick around with canes and underarm crutches and whatnot. A good forearm crutch is almost as good as a handrail. Take the crutches with you when you see the PT and they'll fit you and show you how, and let you practice getting up and down stairs safely.
It is terrifying at first, but going from chair, to crutches to crutch is amazing...