My brain does not work the same way, as when I was before 36.

I'm not sure it's that bad if you do it full-time like any other student. Getting a degree should be doable even at 40+. I used to be a university lecturer in CS, and occasionally I got older students who did very well.

That being said, I think the issue is employability. You may get a degree, but is anyone getting to hire an older person with not experience?