He is having nocturnal enuresis. It might be due to some underlying stress
. If even after restricting fluids before bed its not resolving than
you can opt for alarm
therapy in which your son will wake up as soon as he starts voiding urine. It has a high success rate. The last option will be to put her
on medication or spray at night time. Appreciate when he do not wet bed. You can consult me for any help required.