Oh yes at that stage of infestation you want to prune a bit heavy the infested stuff & if you are not spending money put a tablespoon of dawn in a spraybottle and soak bottom & top of leaves every 2-3 days until bugs are gone. If spending next crop introduce beneficial insects early.
RE: Our Plant advances in its flowering, a bit of history for the Canna Fest 2022 ENG-ESP