Sorry to hear that. In my case it moved in a matter of days, something like 2 weeks, so I know how it is to lose the remaining ear, which you could put in your pillow and sleep in the side.
I have bilateral T since and I can't sleep on my stomach or on one side, only on my back which is the single position I didn't use/like. Worse than that, the frequencies in the two ears are different, and the locations are not symmetrical, which gives me a sensation that my head is not symmetrical anymore, like it was mechanically deformed.
I want to ask you something very important for me: what is the etiology of your T, that spread to the other ear after so many years?
So what was the cause of your T in the first ear/circumstances in which it emerged?
Can you tell me?
The phenomenon that happened to you (the other ear side getting sick after so many years) I think it's very interesting and may shed some light on the T phenomenon.