We had the same thing with being cold, Stacy, right when the weather kind of changed over here...then we had hot when we had the thermostat too hot at night. Can't win! LOL! Also, we had thirsty too because of the dry air from the heat.
All's been much better around here. We had one early wake this week - 5:30 and I went in and said "uh, uh, it's still night time, go back to bed." He was ed but eventually went back to sleep...so that was Sunday I think and yesterday and today he's slept in till 6:30.
The 1:00-3:00 nap has been working really well for him too. I think that earlier nap he was not tired enough and then had a short one, which then caused OT and/or too early of a bed time IYKWIM? He's been doing great on 6:30 wake, 1-3 nap, 7:25 in bed lights out (can't be sure when he's actually asleep, he hangs out sometimes...but it must be by 7:45)