Potty Training Questions

Thanks ladies!
Truthfully, I'm training another boy as well. He's a bit younger but he stays dry most days with minimal accidents but still needs to be prompted. I really thought that having them both go would be super easy because they would feed off of each others successes. Ummmm.....so wrong. The younger boy has now started to fight with me just the same as the older boy now. It's so frustrating because the first couple weeks they were doing so good!! And now I feel like it's all gone out the window. I say 'kay boys it's time to go to the bathroom' the majority of the time the younger boy comes and this boy just flops on the floors and says 'no, I want to pee in my pants'. Yesterday I talked to the mom and told her that this is not working and that her and her husband should really think about sending him in underwear with a pull-up over and have him in underwear at home. I told her that I thought we might be more successful if we made him less comfortable as having a wet diaper/pullup doesn't bother him that maybe wet underwear would. She said they would talk about it but said that the wet underwear doesn't bug him either because they will put him on the toilet and then 2 seconds later he will pee in his underwear and just carry on like nothing happened. I'm kind of thinking that maybe we should take a 2 week break like it was suggested to hit reset and start over with a different approach. I dunno man, I just don't know.