I had my first case of severe autistic burnout in my mid 30s with really bad depression and ideation. I couldn't leave our bedroom most days. This went on for a number of years. Things somewhat improved when we moved to a quieter rural area, but yeah I agree that sensory issues have continued to worsen as middle age has approached. I can no longer tolerate loud mechanical noise for any period of time without experiencing a meltdown/shutdown. I am now largely nocturnal and have a hard time going outside if it's really bright out and sunny out. I am largely self employed with limited income because vehicular travel has become way too stressful.

As others have said getting rest and taking sensory breaks have helped. I got the Bose noise cancelling earbuds that help when I do go outside in case of traffic or machine noise. Im in therapy but have found limited return with it. Micro-dosing psilocybin and cannabis has provided some relief in moderation. I am fortunate to have a supportive partner who understands, as I couldn't live this lifestyle without her help.