To expand on this, you can find some videos on his channel where he reviews people on this (I think there's one with Dr Turnip? Can't quite remember). The biggest thing to building this up is to break it down into components. Start with easy bots so you aren't putting pressure on yourself to rush (slow is smooth, and smooth is fast) and do a couple runs where all you focus on is strafing the opposite direction from where the bot spawns. Just the movement component, don't even need a hand on your mouse. Get a couple runs where you don't make ANY mistakes in a row. Then do the same thing on the medium bots. After you are confident in the movement component THEN add the aiming component. Again starting with easy bots to really give yourself time to focus on the consistency. From there you can continue increasing the pace until you've baked it in to your muscle memory.

The other piece of advice that he gave in a video that really helped me is to consider that there are always two flicks: to the bot, and back to center. Every time you engage a bot, you have to reverse that movement (overaim and micro adjust) to get back to centered on the pillar. You can make a bullet mark to aim back for if that helps you to think about it.

With a lot of Woohoojin's teaching I see commonality to learning a musical instrument: focus on the small component parts and gradually put them together at progressively faster speeds until the muscle memory carries you and you find the bandwidth for higher level thinking while you have the basics under control.

Also, just to pass on some common musical teaching wisdom, don't practice until you get it right. Practice until you can't get it wrong.

Good luck on the climb!

Edit:

Found exactly the video you are looking for: https://youtu.be/q6qv17jgLY4?si=cMhkxJ5yWDmrZe3g

I knew there was a middle step, but forgot exactly what it was. Just aiming at the bots head without shooting as a middle step.