Grass Trial Party Questions

I just finished the Fire Totem Trial in Pokemon Moon and I’m switching up the team to Prepare for the Grass trial and I had a Question. I don’t have many Pokemon good against Grass with only Vullaby, Zubat, Magby, and Charjabug that have anything good against it. But should I even being Charjabug? If it’s Sidekick is Trumbeak I could just lose him at that point right?