So I did a little more reading you’re and you are right. Most sources that I found say 3x/day - 3x/Week is the usual range. More important is the Bistrol stool scale, I mean if you are having a poop once every 4-5 days but the consistency is a perfect 3-4 I dont see any harm in that. (en.wikipedia.org/wiki/Bristol_stool_scale)

Sources I checkdd

• de.wikipedia.org/wiki/Stuhlgang
• aok.de/…/wie-oft-stuhlgang-am-tag-normal-ist-und-…
• aok.de/…/stuhlgang-bei-babys-was-ist-normal-und-w… (that last one though is about baby-poop)