I’ve been injured and sedentary too long. A couple of weeks ago I started walking along the bus route until it hurt too much, then hobbled onto a bus back home.
Today I made that distance and back with low/manageable pain.
Next time the same route will be less pain, and soon I’ll try going as far as I can in the other direction and bus back again.
Ps: There will also be set backs. Don’t be hard on yourself. Sometimes it’s two steps forward and one step back. It’s bi-weekly (or monthly) progression that counts