First off, find a new Ped ENT. I would even urge you to see a Naturopathic Doctor and have your child tested for food allergies and intolerances, if that hasn't been done already. Allopathic doctors will refuse to test for anything having to do with food unless your child has an anaphylactic shock. You need to see a Naturopathic Doctor to have the testing done.
The continual draining from his ears says to me that, for whatever reason, the fluid keeps building back up in his ears, even with the ear tubes; if it is smelly, I would say that no amount of ear drops is helping to combat his getting some type of an infection in his ears either.
Also, any ENT who doesn't listen to what the Audiologist says is a big tip-off that that ENT has a VERY big ego. I would RUN to find another ENT doctor who will listen to you and your child. If you live in Madison, WI, or nearby, contact me and I will tell you who my daughter used. I also CANNOT see waiting 2-3 months so you can "document" for the doctor. Um, obviously there is a problem, you have more than enough "evidence," your child is obviously in severe discomfort, and the Audiologist is requesting that some additional tests be done. If your doctor is against helping/testing, then it is time to look for someone else.
I went through the entire spiel with allopathic doctors when my daughter was born. 15 ear infections before she was 5 months old. Emergency Room runs late at night or early morning; her infections came on and set in immediately. Countless prescription medications, one right after the other. She'd end one and start another one two days later. First ear tubes when she was 5 months--the youngest child ever to get ear tubes in Madison, WI. Another set of tubes when she was about 1/1.5 years, her third and last pair when she was 2.5/3 years old, along with her adenoids out. Countless medications during all those years. Caught every single childhood cold and illness you could possibly imagine (went to daycare). Then started getting system-wide strep infections. Finally, at the age of 7, she had her tonsils out. The ENT who did the surgery came out to see us; he was as white as a ghost. Not only were her tonsils bigger than he'd thought they would be--they went way back into her throat--but they were FULL of active Strep pus! And she hadn't TESTED postive for strep before the surgery!
All those ear infections affected her hearing and language learning. She started Speech at the age of 3 through the school district. Then at age 4 they put her in Early Childhood Education. At 5, when she started Kindergarten, I took her to see a Childhood Specialist. My suspicions were confirmed: my daughter has high-functioning Sensory Processing Disorder. I am convinced the vaccines and all the pharmaceutical drugs did NOT help her in any of this and possibly also contributed. This fall she will enter the 5th grade; it is hopeful that this will be her last year of Speech, but we don't know. She is having difficulty with a couple sounds.
My daughter's childhood illnesses (she is 10 now) along with my own health problems has pushed me into using Integration Doctors and Naturopathic Doctors--Alternative medicine. I have to pay for it out of my own pocket, but you know what? My family is the healthiest we have ever been. When I think now about what the allopathic doctors put my daughter and myself through...I just want to cry. The doctors never once tried to find out WHY my daughter was always sick; they just threw medicine on top of medicine. Once we got her tonsils out--she's had 1 ear infection since then. One in three years. She has not had any colds or flus this last school year. We eat organic food and take supplements. And I hate myself as a mom that I didn't know any better. There was no Mom support group for me, and I had no one to direct me to alternative medicine and what they could do for us until two years ago, when I myself, being horribly sick, was kicked out of my clinic because the doctor "didn't know what was wrong with me and that I should go and find someone who could help me."
I did. It's called alternative medicine, and except for specific things, like my yearly GYN exam, or small procedures, which I still see my new allopathic doctor for, I and my family now do all of our "doctoring" under a naturopathic doctor.
I'm not saying that's the route you need to take, but having broken through the barrier between allopathic and alternative medicine, I'm finding that there is a lot one can do without all the fancy-smancy, high-tech, expensive meds and overly costly procedures. It's actually quite freeing, when one starts to make ones own health choices.