Start by just lightly rubbing his ears, like when he is asleep in you lap… and only the inside of the upright part, continue to practice this when he is awake to get him used to your fingers being in his ears... then slowly work your way down. Use a tissue or gauze pad on your finger instead of a q-tip. This is NOT going to happen overnight... you should be conditioning your pup to have all parts of his body handled... legs, feet, tail, ears, teeth (especially teeth and looking in his mouth).. everything..
And it seems that it is only puppies that seem to get this waxing build up.. once past teething it stops. I have never had an adult that had problems or if I did, it was once an a blue moon.