Hi sorry to hear you still have issues, but it's great that you are mostly recovered.
I too have this problem, and like you I am mostly recovered after 22 months.
But I wake up every morning with my mouth clenched tight and my tounge is always at the top of my mouth.
It's funny because when I do yoga and we have to meditate she says place your tounge on the roof of your mouth, but mine is already there.!!
Not sure what to suggest so hoping someone will weigh in and advise us.

I don't think of it as a real problem but it's annoying more than anything else.

It's great you have come so far so think we have to be greatful for the good things.

Hap