The best advice is to simply leave it alone.
Consider providing your doctor with an Intact Care Agreement.
Usually starting around the age of 5 or 6, boys should be taught to retract their own foreskins once a week and rinsing with warm water. Sometimes the separation process takes longer and a boy may not be able to fully retract his foreskin until he is 10 or more. Once the foreskin is retractable , the instructions for cleaning are simple.
1.) Gently pull the foreskin back.
2.) Rinse with warm water only. Soap under the foreskin can cause irritation and swelling.
3.) Pull the foreskin back in place over the head of your penis.
No one should do this for him. He can pull the foreskin back by himself gently. After rinsing, he simply pulls the foreskin back into place. (Cleaning inspections are not required.) We do not pull out our teeth to prevent cavities -- we brush them.
When your son reaches puberty, he should retract and rinse during daily bathing. Brushing teeth is more difficult than cleaning the intact penis. It is ridiculous to think that children cannot be taught and counted on to perform this simple task through adulthood. Circumcision does not improve hygiene. It surgically removes healthy, protective tissue.
Regarding the issue of ‘dreaded smegma:’ “Comparatively little is formed in childhood. A noticeable increase occurs during adolescence, with its great acceleration of penis growth. “...
lubricates the cavity between the foreskin of the penis and the glans, thus allowing smooth movement between them during intercourse. ...The adult stage follows with its period of maximal sexual activity. Sexual intercourse becomes a regular feature of life and the function of smegma for lubrication assumes its full value. Middle age follows with a decline in amount until there is a virtual absence of the substance in old age.”
It is my understanding that all circumcisions do not end the production of smegma. Smegma is not dirt. Interestingly, in ancient Greek, smegma means ‘soap.’ Smegma is a combination of natural glans lubrication and discarded cells. The production of smegma is part of the process of cellular regeneration. It is natural and healthy.
“Remember that it is stale and accumulated smegma that is a source of ill health for the penis. Freshly formed smegma, washed away regularly and constantly replenishing itself, is a wholesome lubricant - making for ease in erection and smoothness in sexual intercourse.”