battle of the bum change

potty training is 2 steps forward 3 steps back. we are at the 3 steps back and holding stage....

liam however puts up a fight EVERYTIME we have to change his bum. by fight i dont just mean whining and carrying on. i mean he will drop his entire body weight, kick, scream, flip around, punch and cry.

why does it have to be a fight?

whyyyy??