No problem, hope it all works out fine very soon. good luck
Oh, I used those little porta potty things for my first son and I don't recommend that. I hated cleaning that thing with a passion. But for him and then my second son that always went on the big potty, they make these rings you sit on the toilet and then they sit on that. I had a travel one that folded into a small bag. It was plastic with characters on it like dora and diego. Look for something like that you can take with you and start using it more at home (we had a home one that was plusher and didn't fold up that my boys would put on and off as needed) so he gets used to the big potty concept. good luck
Whens hes naked he knows the urge he will run to his potty n say i gotta pee mommy. When we our out and about he will say sometimes i peed or i gotta go potty but when i put him on a big toliet he freaks out cuz he thinks he is gonna fall in
2 1/2 is pretty young to understand everything he needs to, in order to potty train effectively. He has to understand the urge, and to be able to connect the urge to the need to stop what he is doing at the moment, and to connect that to walking into the bathroom and getting onto the toilet, and going. He also has to understand to tell you if he needs help with his clothes, and / or has to know how to and be able to manipulate his clothes in time. As I said, it's a lot for so young. I don't know if you are going to be able to train him just because another baby is coming along. Also, it can be pretty inconvenient to have a potty-trained small child telling you "Mommy, I need to go!" when you're rushing to make an appointment, or in the car on the freeway, or whatever. I wasn't too sorry my son stayed in pullups past age 3 for that reason alone.
Anyway, good luck with your plan, but if it doesn't work that is not really the worst problem to have. Even if a kid is in pullups, often the child will go poop in the toilet after a while and only pee in the pullups, making cleanup not so much work for Mommy.
Hm. Can you get him to say "go potty" when he feels like he has to and then you remind him to take his underwear down??