Re: I think my swallowing pattern / tongue position is wrong, what can I do?
My personal experience with a speech therapist was quite rewarding because they correct the mistakes you are doing, and a computer cannot!
Unless you get a video online of how to, I would say forget it.
Example: worked with therapist for 1 hr and they give you 2 sheets of exercises.
You do not get a video of how to do the exercise, but you practice with your therapist. Now you go home practice on your own. Go back to therapist following week to discover you have been doing things a "little wrong".
Imagine trying to read these exercises with no correction. You may make things worse!
I suggest you go for speech therapy. Very helpful for swallowing, eating and speech.