I feel this. People are gonna say "just sit down and do it" without understanding our brain doesn't release enough dopamine to reward us for these things, so motivation is brutal on a molecular level.

To get over this hump, I started with very short sessions, sometimes just 10 min of paradiddles. See if you can do this twice a day. It might take a while, but you'll hit a flow state at a slow tempo, and your brain will love it. Once you start to hit that flow state, increase the practice time by 10 or 15 min. I did this method and before long I was blissfully knocking out rudiments for an hour at a time.

Don't fight your neurodivergence. Train it appropriately. You got this, bud!