Oral Lichen Planus: What meds & treatments have worked for you?

Greetings from Virginia! I was recently diagnosed with oral lichen planus. I'm an RN but had never heard of this condition before. I've seen my dentist, a dermatologist and a periodontist and still don't feel I have a viable treatment plan.
This is what I've been prescribed so far: Clobetasol Propionate ointment, 0.05% by my dentist (my dermatologist told me this was way "too strong."
Dental paste, by my dermatologist, which is the most miserable stuff to apply EVER. I've tried all the tricks, but it always gets on my tongue and cheeks when I try to apply it only to my gums. It's GROSS.
Dexamethasone mouthwash by my periodontist, just recently. This is definitely the easiest product to use -- but I can't really tell if it's helping yet. It does contain 5% alcohol, which surprises me since alcohol is supposed to be avoided.
I would truly like to find some non-traditional meds or supplements and will try increasing vitamin D and will add B12 (I already take a B complex nightly). Has anyone had success with anything else? Apple cider vinegar, other supplements?