When can one make the baby stop wearing diapers?

my elder one was completely potty trained by 2 years, while the younger was completely trained by 15 months. it all depends on when you start toilet training, as each baby takes different amount of time to adjust. once your baby is completely potty trained, give it about 2 to 3 months before you completely stop using diapers (i'm assuming you won't use it in the house anymore anyway) so that any accidental spills can be avoided. all the best :)