When I was the mom of a newborn, I was visiting with a neighbor, and her very competent oldest child, age 6, calmly walked out of the bathroom, carying a wetwipe, found her mom, and whet 'tushie up' so mom could wipe it.
So I don't think it's unheard of for 6s to be 'not quite ready' to be fully independent. What I like is that the mom taught the child to have competencies around the behavior, and it was least difficult for the mom. Also the wet wipes.
It really does go by very quickly when looking back at it.
Good luck,
Grinity
