What defines a burnout is reaching the limit. You need to rest, not to double down. The harder you push, the harder it will be to recover.
The question should instead be which steps can you take to stop the current situation from getting worse and what can you do to recuperate. Answering that requires context.
So yeah, just ... don't.
Being disciplined in your work. And being disciplined in your self care.
Stop staying up till 4 am playing video games, and instead establish a good sleep schedule. Stop forcing yourself to work all weekend or evenings. Stop procrastinating during work hours, and instead lean in to your work.
Try and rationalize away all the concerns about the meaningfulness of what you do. Make sure you are not operating on power saver during the day and give it all you got!
Also give it all you got in after work hours and make sure you get some positive emotions out of it regularly.
Wake up well rested in mornings with proper sleep habits.
Adjust your position in a way that situations that cause strong negative emotions are not your concern.
Last time i got burnt out it took me 3 years to start coding with passion again. And first I had to get away from coding to heal. In the start I'd just spend all day outdoors and in gym. Then I started to go to events and parties. Then I started to read books and feeling intellectual curiosity coming back. Then I got into movies, esp movie recap/summaries on youtube. Then I got into gaming and I went from noob to competitive. Started to feel good about myself. Then I got into video editing. It was more challenging and vague. I was blown away at every thing I'd end up creating following tutorials and such. THEN... once I was rested, confident, curious and happier I came back to coding. Now I can detect burn out coming and peace out, doesn't matter how many deadlines are there, they are bs deadlines set by people not coding.
This is sometimes BS - meditation doesn't cure all problems. But the idea is that if you don't have any time, the reason is because you're not spending enough time to clear your head. I think remote work makes it especially likely to never have any free time.
You can try to stave off burnout just by optimizing your general physical health. (So, making sure you're getting enough sleep -- and exercising, and eating right.) And you can try taking a break from work -- taking a walk outside, getting fresh air/a change of scenery/exercise.
Basically, getting a real break from the pressure is the surest way to recharge. Talking to another human being, or maybe an old friend of some kind, etc.
Not sure what to do when I actually have one.
If you're actually burned out, you'll be staring at it for the whole 25 minutes, then getting extra stressed out at reporting it to the accountability partner, which results in a downwards spiral. Heck, you'd be lucky to even finish writing the plan.
Overcoming burnout is looking at your situation from the outside in. What you described is clearly a downward spiral. Logically, wouldn’t it be better to write some words for a plan than no words? If you can procrastinate for 25 minutes while you are burned out, you can spend 25 minutes writing a plan, even if it’s one word a minute or one word every 5 minutes.
The key is to break down what you need to accomplish and how you will accomplish it in the smallest incremental steps possible. Once you have that list, it becomes less overwhelming to make progress. Don’t focus on completion, focus on making tiny incremental progress.
I think internet health advice can be harmful because not everyone has an equal definition of the same terms. Society tends to use the same terms for fatigue, burnout, and plain laziness. It's like trying to apply aloe vera to a third degree burn.
I think you're on to something with trying to regain control in small incremental steps. But it's probably another approach.
There is needs to be app of some sort for accountability buddy.