A.M.
Throw out the pull-ups unless you're going for a long drive in the car or something like that. At home, I found my son did best with nothing at all on his bottom. After a few days of that we went with shorts but no underwear -- he was able to get the shorts up and down by himself. Now he does underwear too and we haven't had an accident in weeks (knock wood!). He potty trained in about a month.