N.B.
My son was trained like overnight on the going pee. But the other he only did 2x in his pants. Mainly because the 1st time I had him stand there and watch me empty it into the toilet and rinse them out. The 2nd time I made him do it! He never did it again! So make him clean it up if he doesn't want to go in the toilet. Also tell him the baby will need a big brother to watch out for her. Might make him feel like he has a purpose with the new baby. But do not use pull ups except for overnight. And if he does something in his pants. Make him clean them. They do not want to spend their time cleaning iky stuff from their pants! The only exception was if he was sick and had diarreaha (sp?)I hope this helps!