Can you revamp the intro to tell more of an engaging story instead of launching straight into content? See The Story Tellers Secret for ideas. Use it as an opportunity to try something new and try to engage your audience more. Even if it flops, you’ve learned something and improved your presentation skills for next time. I like thinking about the particular audience and trying to figure out how to get an emotional response. Or replace a wordy slide with a simple compelling visual.
Starting with something new, even if it’s just a slightly different way of framing your intro, can energize you for the rest of the talk.