It actually took about 7 weeks for the lump to go completely away, BUT the puppy did continue to chew on it while playing, despite our best efforts. Since it doesn't hurt, Lily doesn't object when he does it, so we have to catch them in the act.
Time to time, my dog’s left ear was smelly and red. I tried various liquid ear medicines to him but not completely cured.
Then one day, for the experiment, I put few drops of iodine and mixed with few drops water to small glass container, then used Q-tips to clean outer areas then rest of mixture poured into the ear then hold it in few minutes.
After that no more bad smells, his ear looked healthy!