My boy is 3yrs old and he says toilet coming and go to washroom but he doesn't say when he is getting potty? why ? I am saying u have to sit in washroom but no use

A. Basically seems like your child is scared of sitting on the commode which is why your child does not inform you about the motion you have to convince your child to inform you and tell the child that it’s very unhealthy and unhygienic if you pass motion in the pant or in the underwear because with boys stand comfortably in the washroom but while sitting you have to explain it to the child