Not sure exactly, Suzanna. But yesterday, he passed out a little over 5 hours in the afternoon, and it seems like he needs more than 4.20 in the morning (refuses at 4.30 too). Then today, he did a CN in the car after 2.45 A. I think I saw someone try 5 A morning and afternoon and just go straight for one afternoon nap. I would've tried that but we've been trying to address his NW, EW, OT, etc... Probably still worth a try. We'll see tomorrow. Thanks!