I've been making some good strides on that front. I'm one of those chronically early people, so I always set my morning alarms to give me more time than I need. On days when I work, I usually end up with 30-40 minutes to myself after getting ready and eating. I know that amount of time isn't "small," but for me, it's less than I'm accustomed to. I've been so long of the mindset that 2 hours is the minimum functional working time that making good on 30 minutes is big for me.
And I've been doing it. I might not manage to edit a full chapter, but I can edit some, or write a few paragraphs of a story in that time. It's getting easier again to find that train of thought and then note for myself where to pick up next time.
In short, I am a work in progress myself, and I'm improving. A few minutes at a time.