If you've been pulling his foreskin back, you've been damaging his penis.
The foreskin of an infant/toddler is never supposed to be retracted.
It's fused to the glans, and there is no cleaning necessary under the foreskin, any more than you would douche a female of the same age.
Nature takes care of the developing genitals.
Premature retraction of the foreskin can lead to phimosis in later life, as the elasticity of the foreskin opening is damaged by attempted forcible retraction of the foreskin.
The normal age of retraction is about 10 years old, according to a recent study in Denmark, where the vast majority of males are not circumcised.
And many doctors just reccommend circumcision indescriminately because they make money from it, and are very frequently members of the religions that try to impose the mutilation of circumcision on all males.
Leave his foreskin alone. The glans, also, of the non-circumcised male is a much darker color than the circumcised penis, because there isn't the keratinization that diminishes the circumcised male's sexual sensitivity.
Don't let any caregiver or doctor try to retract his foreskin.
If you have questions about this, simply type in NOCIRC on your browser, and you can find out about the care of a non-circumcised infant.
Circumcision is the worst hoax ever perpetrated on the male sex.
A foreskin is not a birth defect; it is a birthright.