Yeah that's fairly textbook procrastination and then deadline stress - driven productivity, which is fairly common for ADHD people. Not enough to prove it on its own, but if you also identify with a lot of other things in this community it may be worth looking into

A few other examples off the top of my head that I have:

executive dysfunction (trouble starting tasks, even that you 'want' to do
often abandoning hobbies and personal projects for new, interesting ones
trouble staying focused on tasks that dont have that immediate deadline pressure
trouble forming habits
often fidgeting/stemming when not thinking about it

And reminder that even if you don't have stereotypical 'hyperactivity' symptoms you still might have a form of ADHD, for example I don't, for me it just manifests as often fidgeting, but not much beyond that.