Way to go, Jo! That is a great step! I hope you find WW helpful. It DOES work.
As for the training...I let my kids have pull-ups just at bed time (not nap) for the first several months after they were dry. Made all of the difference. They were perfect all day, and if they had an accident at night, it was no big deal. And they quickly learned to stay dry through the night. And my girls trained at 18 mos. and my son at 26 mos.
Oh my gosh E, aren't girls great! Taylor was by 18 months and Ryan was almost 2 1/2. It was torture!