No, no. I am not giving any particular amount of time as a goal. I am trying to get across some principles that people can try to implement in their own way. I try to give examples of how someone might be able to implement the ideas, but they are examples, I am not saying any particular person should do it exactly that way.@Kimsie do you mean three hours of straight activity or three hours split throughout the day? Are you saying three hours should be the goal?
I am struggling more with just eating and drinking right now and having weird episodes that are different than PEM and either dehydration or not eating enough?
People who have less of a window will have a harder time implementing the ideas. Each little change can make an improvement, but small changes will take longer to see the improvement. Even with larger changes, I wouldn't expect to see any improvement at all for at least a week or maybe two. The worse off a person is, the smaller the changes and the improvement will be. But if you can keep improving even a tiny bit you are going in the right direction.
I mean any amount of time that can be split up into smaller amounts of consecutive activity time.
One principle is that a shorter amount of activity before complete rest will be less damaging than a longer one. So if a person plans to spend 1/2 hour on a task, doing the task for 15 minutes and then resting completely for 15 minutes and then doing the task for 15 minutes is better then doing 1/2 hour together.
In your case, I don't know if it is possible for you to break up your tasks more than you do, but think of sitting as a task. So you sit on the couch for 15 minutes, then you lie down for 15 minutes and relax completely and empty your mind, then you sit for a while again. Maybe this doesn't apply, but I am trying to show that you start with your actual activities, and think of how you can modify them to break the activity up with rest.
People who drive themselves places more than 5 or 10 minutes away should leave early so that they can lay the seat back and rest before they do what they went to do, assuming they are in a place where it is safe to do that.
If you are having trouble with dehydration and nutrition, this is a different problem and you have to find a way to get those nutrients.
Another principle is that as long as a person who is seeing improvement does not raise their activity level, their improvement should be exponential, with a faster rate of improvement as time goes by. Increasing activity will slow or stop the improvement.