I waited 7 months for my first appointment for screening, then another month for an in person assessment that took 3 hours. It’s been almost 2 months since then and no response except for the $1000 bill. I’m about to call a lawyer (if I can ever get around to it…)

Yes, and honestly that’s how I coped for a long time. It leads to stress and burnout and major crashing. Not a good long term solution.

Look up classic ADHD coping mechanisms. Others have mentioned some in this thread like studying with someone (body doubling) or enforcing a schedule. One big reason procrastination works is that the stress/adrenaline acts like a stimulant that is one of the normal medications for ADHD that helps you focus.

One other suggestion is to study when well rested (first or second thing in the morning). ADHD symptoms can be exacerbated by being tired.

Are you taking anything for your ADHD? In some cases, your own adrenaline is acting like a stimulant medication and helping you focus. This could be a sign that you need to increase your dose or that you need some to begin with.

For me (unmedicated) I actually have a workout routine of 30 min of vigorous activity every other day which gives me enough of a natural stimulant boost to stay focused, but your milage may vary.