Sounds like the movie Boyhood

For me I use Phillips soniccare tooth brush which is infinitely better than a manual one. Have you tried your luck with iodine mouthwash? It’s more expensive and tastes gross but it’s really good for gingivitis and doesn’t burn. Also if you aren’t already, flossing everyday and maybe after each meal if needed is important. Floss has to be reaching below the gums to pull out the trapped food and not just in between the teeth.

Time to bust out the cranberry juice

I think of it like there’s more than just Christmas being celebrated at the end of the year, so to include them all it’s easier to just say the holiday season