How long can it take to eliminate OT? I posted yesterday ("Quick help needed w/NW"). My DS, 24 months old, is def. OT. This has been going on since Sat. He napped today from noon to 1:45, waking at the 45-min. mark and then the hr. mark. I'll have him in bed by 7 this evening to try to help with his NW and OT. How long can it take?