I'd highly suggest reading the book: The Dyslexic Advantage
My son gets mispronunciations almost perfectly stuck in his head. One tool I've found is laughter to work on unwriting some of these as there is some indication laughter unhinges false wiring. But when your brain is forest-wired rather than tree-wired stuff like mispronouncing come from a bunch of connected things summing together to create an answer rather than one fixed memory. You may be able to reconnect by grabbing a dictionary and reading aloud similar words where you have the right pronunciation.
Well over forty and I've never learned to tie my shoes right consistently, though a picture of it and the principle of the opposing strings help me think through the right way. (thank you velcro)
