I seem to remember - but cannot find, even with an AI boost - someone's "law of computing" or somesuch describing the amount of time that has to pass before code you wrote is indistinguishable to you from code written by someone else. At any rate the interval is not so long.

In your own codebase you can at least run a "you simulator" to arrive at the answer fairly reliably. "Where would I have put this bit? Oh yes, of course ..."

You are not. :) my memory is disturbingly fried.