I've overall remained the same. I was diagnosed with ADHD as an adult, but teachers tried to get my mother to explore that when I was a kid. Because she did not, I had to find ways to adapt without the aid of medications. I switch between modes of a kind of hyperfocus (sometimes on necessary tasks that may not pique my interest, but I am intent on completing them- I'm not fully present in mind with these activities, though my body performs the actions, & it's hard to tear me away from it). On other occasions (on the same given day) I'm scattered completely in body/mind, highly distractable, short attention span, inability to sit still. Medications have helped even out the field, but I find I revert back to the same variations when I don't take them. I can function either way. The full recommended dosage would increase my ability to focus, but it diluted elements of my creativity- that internal spontaneity that makes anything worth doing in the first place- so I take less than half the recommended dose, if I take it at all.
In short, medicated intervention aside, my attention span has been about the same. All over the damn place.