Biggest piece of advice, you don't need to document everything you do in your life. If it's info you might use in the future, a significant interaction or event, fun tidbit etc, add it in. If it's just a casual conversation with someone that you don't learn anything significant or it's something that you'll never link to or use again, just keep it as a memory.

I did a lot of over-capturing early on and got a lot of fatigue from it. Now my note making is as I run across things I'll want to reference in the future (plans that were made, ideas to learn more about later, important phone calls/interactions, notes on articles, updates on projects, etc), with refinement to those ideas coming when I access them again later (or if I'm bored and have time). It's no longer a drain to grow my PKM, it's slower but much more meaningful info