Looking for anyone that has oral papilloma experience

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I just noticed one on Mya's gumline about 2 weeks ago. She's 9 years old and I know it's common in aging dogs as they're immunocompromised, so I immediately started her on an immune system boosting supplement. It hasn't gotten bigger but it's tough to tell if it's gotten smaller. Today I also noticed a teeny tiny one on in side of her cheek right where the original papilloma touches.
I went to the vet and they confirmed that's what it is. They said it could take 5 months to a year to go away!!
It's not bothering her - it just bothers me knowing it's there and I'm terrified she's going to end up having them all over her mouth. I hate the idea of sedating her to remove it, especially since that doesn't fix the virus - it just removes the growth.
Any help or advice welcome! I couldn't figure out how to get a picture upload to work here unfortunately!