When should bedwetting stop in boys (enuresis)?

"Should" is wrong ?: Up to 15% of boys wet their beds from as little as once/month to multiple times every night. Resolves in about 15%/year without treatment. Many factors involved including genetic, maturity of nerves involved, depth of sleep, overall fluid intake etc. Advise 1) limit fluids after supper 2) awaken to toilet 1-2 hours after going to sleep 3) try bedwetting alarm after age-7-years.Above all sympathize.