Vision changes gggrrraaadddduuuuaaallllyyy with age, as does one’s spacial perception.
Since this is a car you are familiar with, I’d have those two things checked by doctors.
If this were a car new to you I’d say , practice .
Newer cars with thicker doors for crash protection, can fool your subconsious because the interior seems narrower.
But, then again, practice may just be the answer to age related changes.
In a parking lot set up barriers, not just cones but taller, like big furniture boxes, that are the width you want to practice with. And do just that for a while. Not just back and forth, but go around and back again. Try both right side only and in between the barriers,. STOP and get out to look how close …or too close you are…rinse and repeat.
My Wife lost the vision in her right eye.
Practice was the answer, both in our logic and doctor’s orders, and in the book ‘‘A Singular View’’, about adjusting to life with monocular vision.
She still has not driven her 79 Chevy pickup since her vision loss. It does not have swing-lock mirrors and she could do some damage.