Here is a link to recommendations from the Cleveland Clinic which seems consistent with most dermatologists recommendations.
https://health.clevelandclinic.org/h...-take-a-shower
The only difference is this site suggests showering daily as rule and most others recommend fewer showers unless you've participated in activities that might result in sweat/dirt/odour.
With respect to the question at hand:
Focus on the smelly bits
Unless you’ve been mud wrestling, you probably don’t need to use soap on your entire body. “Generally, the only areas that you need to wash with soap are your face, armpits and groin,” she says.