If you get sub 10-15 misses on something, try playing it with HR. If something is too slow for you, of course, speed it up. Mainly for consistency aim, speed aim, and HR consistency.
Don't overdo anything, still make sure to include other skillsets into your sessions.
Make sure you don't hurt your hands either. - https://www.youtube.com/watch?v=H6y0D_8kRoU