It's become a constant battle in our house, too. My DS1 and DD just won't nap at all during the day - they're up at 5 am and are so tired by 2 or 3 pm, but just won't sleep. They're miserable until bedtime and then they still fight it. Carter, thankfully, still naps like a champ, but he's down from 3 to 2 naps and looks like he's moving to just 1.
Re: I almost gave up in the fight