RJM

In addition to the SLP, a good prosthodontist may be able to help. Mine made me a "palate drop" since I could not touch the roof of my mouth with my tongue. It immediately improved my ability to "spit" out the mucous as well as my speech. I had a second one made a year later with some extra extensions designed to overcome the swallowing difficulties shown in my MBS but no luck, although it did improve my speech even more.
It can not hurt to have an evaluation.
Charm