I was diagnosed at a young age and this isn't new, but I have become more and more frustrated with it: getting to do something often happens slow. In the gym my exercises are often interrupted by many minutes of getting stuck in my head, being distracted.
People talk about how it's okay to take breaks but I sometimes lose HOURS at home because I just don't do anything and it isn't resting either because my head keeps churning without a goal. I call it a limbo between activity and resting. Sometimes my phone or another means of distraction is to blame, but other times it's just anxiety to do something because "is this the best use of my time?" (in general I often have time anxiety)
It drives me crazy because I will have a plan of things to do that's totally reasonable and achievable, but then I only achieve a small part of it because I keep wasting so much time, I then procrastinate on the rest. This mainly affects activities/plans I've set myself, those set by others let me just obey and not have to overthink as much.
Does anyone else relate and can they share means of dealing with it?
I'll be honest, I'm not sure it isn't myself. My reasoning was that I can function normally most of the time and that the "buffering" isn't that severe.
Your description of catatonia sounds familiar, I've definitely experienced it a few times, usually lasting a day or two. I had a severe case almost two years ago halfway in my first year at university: I couldn't push myself to do things for school anymore and felt doomed to be incapable to manage adult life.