In addition to the excellent specific comments here, I think basically everyone should be using Spaced Repetition (eg Anki). Also, written checklists. I actively update both 10+ years into my career and the ROI is huge for the 1% of my day that they require.

For your situation, it might be a an excuse to ask “n00b” questions again: Say you’re assembling resources for yourself and future hires to avoid mistakes in the future