Please help me with my mono grass team!

My best buddies have an annual tourney and this year it’s VGC monotype with no legends, paradox, or ruin. So, essentially Regulation H. I picked grass type. But I’ve been scratching my head trying to figure out how to deal with Dozo, especially if it goes Tera Grass. I’m also curious how people might approach the Ursaluna matchup against mono normal. Any realistic shot against fire? If there are any grass type kings out there that wanna help us bag the win, I’d be eternally grateful! ☺️