A.L.
C.,
I have two grown children and have a daycare in my home, so I have been there many times. What I have learned is that you cannot force a child to potty train, if they are ready they will do it. I also have found that pullups are a waste of time and money. They feel like a diaper. Training pants work much better. I realize they are messier, but they definitely feel it when they have an accident. It needs to be unpleasant to mess in their pants so they won't want to.
Wait till it warms up so you'll have less laundry and try again.