At that point get someone to do it for you for x% of what they're getting you back and live blissfully unaware of arcane tax code specifics.
529 plans can get a bit more complicated because you'll want one from your state (if your state has an income tax) and they may offer several, but then it's less about knowing tax code specifics than about what the differences are between their offerings.
It’s really not that hard and i don’t understand why more people aren’t interested. Let’s reframe for a minute…if i said a high earner could retire a year earlier, or maybe even a few years earlier just by learning some semi-advanced tax strategies. Should they do so? Yeah. They’d be crazy not to lol.
Even that is not a simple thing. What’s your benchmark? Is that the right benchmark for you and your goals? Agency has a cost.