Sometimes if you just ignore them or a bit they will come to you .... With regards to the diaper changing .... Gee I dont know.... Because at three he should be trained or at least started and he certainly can't go all day with out being changed . What does the mom say about that ? At 3 he is old enough to understand that he needs his pants changed !!!! Did he just turn three or is he closer to 4?
It's funny some parents think that they are doing the best for their kids by getting a nanny but really what they need is socialization with people other then family.