Please get checked for glaucoma if you haven't already. Goes for anyone reading this comment who feels their vision is slowly getting worse. I started getting it in my 30s, it can strike early.
Yep, this is where I'm at too. 13" is just not enough space for me to get anything done productively. On my 13" MBP with my standard font size, my code editor can't show a full line of code without me having to scroll (VSCode with mostly default settings, font size 12).
I sincerely hope they're around long enough to make a 15" version. My old eyes can't do 13" any more, unfortunately.