Learn from my lesson
My two guys did the same thing
When they were puppies they ate kibble
Then all of a sudden they turned their noses up at it
Now if your pup is hefty do as the others said and just put out the kibble
and when they get good and hungry they will eat it
But my Mike is a little guy
he was three lbs when this was taking place I didn't want any health issues
so I tried everything
I even made a meatloaf with ground beef and chopped liver
but they STILL were not really eating
But my changing hteir diet upset their stomachs and made matters worse
requiring 2 trips to the vets because of vomiting
What I would suggest is get a good kibble mix it with a good puppy canned food and stick with that
Try some plain chicken or turkey every once in awhile too