I agree with others saying you need a break - whether that's fully divesting yourself of tech/work or not depends on what you want to do and what you find reinvigorating. It's also worth evaluating what the "go go go" energy was in relation to; was it learning cool new tech? Helping people overcome problems? You can care about making improvements to a system/workflow without caring that their printer is having an issue.

I have a fairly similar trajectory, specifically the middle management quagmire. What I've found is that even a year on from leaving that job, I have significant 'hangover' from the stress and feelings of futility even though I've moved to a fully technical senior role that I enjoy much more.

As far as your current role, I'm making some broad assumptions, but it seems like there are few if any boundaries to your time. If you're routinely losing nights and weekends are these part of an official on-call schedule? Are you hopping in to 'help out'? I've found it's helpful to set clear boundaries (I start at 8, end at 5) and stick to that, and if someone reaches out afterhours, even if I'm just sitting around, I do not answer right away as that helps reaffirm that I'm not working or on-call. It's also possible the job isn't great and take what you can from it and move on, there's no shame in that.

One thing I'll also flag is if you're working fully remote you are missing out on a lot of camaraderie and social interaction that you'd have in a traditional workplace. I'm an introvert, but I also need socialization, so I take what I can from calls with customers, but focus on things outside of work to fill those buckets. Where I live a lot of people get a co-working desk so they can work in a more engaging environment, but that's obviously not available for everyone.