In my recent studies in Revelation, I’m struck with this theme we see so often throughout the book, “the word of God and the testimony of Jesus Christ,” or variations of it. Sure sounds like sola scriptura to me! Our testimony, or witness, of Jesus Christ, does not derive from the magisterium at Rome, it comes from the word of God.
But even you would likely agree, it is not just the scriptures, but His Spirit guiding your spirit in and through the scriptures, so it isn’t ‘sola’ by a long stretch.