I screwed up my 2023 taxes by accident in an obvious way that netted me a significant extra amount. I haven't heard anything from the IRS in a year at this poi

I screwed up my 2023 taxes by accident in an obvious way that netted me a significant extra amount. I haven't heard anything from the IRS in a year at this point. I imagine that at some point I'll get a letter asking for what I owe but I have no idea when. The IRS really sucks at its job and the GP is right that they're about to get a lot worse.