Go and learn. Skills are not set in stone.
> I don't perform well remotely, and my wife won't consider relocating
I understand that. I don't know you, but maybe a nicer setup with more (not too direct) sunlight can make it better?
Sure, but learning takes time, which I have little of. It's also much easier for some than others (getting significantly more difficult as I age).
The main remote issue is that my wife interrupts me to do stuff or answer questions throughout the day. I also feel I'm slower to learn remotely. I think that if I'm an expert in the tech already, then remote could work.
You don't need to spend all day in a class like a university student. An hour a day dedicated to lectures, practice and taking some notes with pencil and paper* can do wonders on the long term.
As for your wife, maybe you can talk to her and ask her to leave you alone for some specific times, unless it's urgent. Or ask her to send you a message instead of talking so it doesn't interrupt your focus so much.
* Some research on learning has proven that taking notes like that is way more effective than typing on a keyboard.
I learned C like ten years ago and then I moved on to PHP and then to JavaScript. I'm sure I forgot most of it. But thanks to that, I'm now learning Golang and when it came to pointers it clicked almost instantly.