I'm sorry I don't have any advice on an ENT, I have no experience there, but I have another thought. When you say you've tried natural remedies, have you tried a chiropractor or a doctor who does cranial-sacral work? If you have, I'm sorry I can't be helpful, but I wanted to mention it because a lot of folks have never heard that others have had good results this way.
My daughter hasn't had an ear infection in 2 years now, but she was only 6 mos old when we saw a doctor on Bee Caves who does cranial-sacral therapy, Dr. Jim Davis, and the ear infections stopped. So I don't really know if they would have continued, or been as bad as your daughter's sound, if I hadn't gone.
Good luck with getting recommendations on an ENT.
My daughter hasn't had an ear infection in 2 years now, but she was only 6 mos old when we saw a doctor on Bee Caves who does cranial-sacral therapy, Dr. Jim Davis, and the ear infections stopped. So I don't really know if they would have continued, or been as bad as your daughter's sound, if I hadn't gone.
Good luck with getting recommendations on an ENT.