FWIW, I cut back to 30 hours a week for a couple of years in my late 40s. The effect on my stress level was phenomenal. The issue wasn't so much the direct hours worked, but the flexibility that I had to lengthen a weekend or take a random morning/afternoon off without feeling like I was cheating anyone. It was also nice not to be on the critical path for every damn thing, which I think is a continual struggle for most people experienced enough to be in a leadership role among many more junior developers.

There was a downside, though. Between working less than full time and working from home, I sometimes felt pretty disconnected, marginalized, etc. Mostly I was OK with that, welcomed it even, but I eventually came back to full time because I didn't feel like I could drive the things I needed to from that kind of position.

Overall, I highly recommend it. Just be aware that there are downsides. Like working from home, there's also a greater need for self-motivation, self-discipline, and self-reliance than if you're working in a more traditional arrangement.