How to stop bedwetting in 8 years old?

Hey I guess before showing him to the doctor you can do simple things at home first to see how he responds. Do not let him have anything liquid 3 hours before going to bed, be it even milk. And take him to pee at midnight once. Once this habit ix set he will on his own wake up to pee. Try doing this and if you do not see improvement then you can ask your PD.