Tips on potty training on almost 3yrs old boy?

i need some help and my son will be 3 in may and he soent know if he want to go or not he will stand up next to the potty but he cant go we take him to the potty every 30min and he will wait until we put a diaper or underware on him then he will go and i dont know what to do please if anyone has tips please tell.... show more i need some help and my son will be 3 in may and he soent know if he want to go or not he will stand up next to the potty but he cant go we take him to the potty every 30min and he will wait until we put a diaper or underware on him then he will go and i dont know what to do please if anyone has tips please tell. thanx for reading
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