"A Day of Your Life" is a really good routine. The good part about the one-ahead is that you are not doing any writing (avoiding the problem the Jerx is trying to fix and the issue Osterland is disguising using the card selection). The final thing written (the clock face) is the first thing revealed and the method for that isn't one-ahead. That throws the whole scent off. The second thing revealed ("breakfast") isn't really one-ahead either because you haven't looked at any of the other slips. So that really leaves two revelations that are one-ahead, but by that time you already have two hits with the other methods. That makes the method of using one-ahead invisible.
The key to that effect is to not be perfect and to embellish. I'd do it verbally for the time (although writing it down has less of a chance of them trying to change their answer)."Do you wake up to an alarm or music? [if yes] "I thought so, your thinking of a time that is a on the half hour. I'm getting the sense it is 6:30? [Exact time]. [If no] "I'm getting that sense. You woke up a little later, between 8:30 and 9:00" [they wrote down 8:47]. If you do write it down, be off by five minutes.
"For breakfast, I'm sensing you didn't do the typical cereal and milk, but it was something a little more substantial. You don't like your eggs scrambled, do you? [if yes] I thought so. [if no] I thought so, how do you like them? [use answer in next sentence], So you had bacon and scrambled [or whatever they said] eggs. [Open up the slip and read it] There you go, "bacon and eggs."
"For lunch, do you make your own or buy something? [answer is buy something] "I do get the sense that you like to buy a good sandwich." [if answer is make your own] I do get the sense that you like to make your own sandwich. It was a sandwich you had, right? You seem like the type of guy that likes a good Italian hoagie (sub, grinder, whatever they call it where you live) but you didn't have one of those yesterday. [they agree to the last part, but the audience thinks they are agreeing to the whole statement]. No, you had something more basic, did you have a ham and cheese sandwich?
The key is selling that you are "reading" them. Give them more than just what was written down. That takes whatever heat there is off the method.