This may or may not be helpful, yet here goes...
After raising 5 kids, I have noticed, at least with my first kids that sometimes I would do things that kind of put off facing their side that resisted my influence. So sometimes they would get pacified into habits that were energy zapping for me or counter productive for them. I mean, at least for me, it was kind of shocking to realize my child could protest, be tempermental, or would actually choose to reject the healthy, good practices I was trying to teach them.
Finally I came across a book that basically said kids will up the resistance 3xs to see if you really plan to stick to what you are teaching them. It said if parents can stick to their resolve respectfully, with a good example, validate, and praise every good step toward the goal then the prize at the end will be won.