Yoga nidra (sleep meditation) has been quite helpful.
What really helped is also performing nervous system calming techniques not only at rest, but slowly when I walk around as well when I was able. Got the idea from Becca Kennedy who just posted this video: https://www.youtube.com/watch?v=XfZFtWx1YvM
The downside is that a lot of people are out to take your money when you read about this. I'm skeptical of brain retaining courses. I trust Deb Dana's books
One technique I'll add to the list: skin massage (literally pinching it with your fingers) around the sympathicus area: along the lower ribs, up the sternum and into a V-shape around the neck (roughly following the collarbones). The nerve endings on the skin literally stimulate the sympathetic system, allowing it to "reset". I don't know the exact mechanism, but I can vouch for it actually working.
NB: I have nothing against evidence-based medicine. But our bodies are much weirder than the high modernists were willing to admit.
Pushing heavy weights is very taxing on the nervous system and kicks it into gear to start the process of growth.
"Vinpocetine, a derivative of the alkaloid vincamine, has been clinically used in many countries for treatment of cerebrovascular disorders such as stroke and dementia for more than 30 years. Currently, vinpocetine is also available in the market as a dietary supplement to enhance cognition and memory..."
There can be mitochondrial damage in some LC patients which will stop them being able to release energy the way they used to. https://www.news-medical.net/news/20240104/Study-identifies-...
And that has been my experience.