When Should A Growing Company Stop Handling Its Investor Deck Alone?

Our company has started attracting more investor interest, and preparing each presentation is taking more time than our team expected. We keep changing the slides based on different opinions, which makes it difficult to maintain one clear message. At this stage, I'm wondering whether founders should continue handling everything internally or hire a pitch deck expert for a more focused approach. What signs told you it was time to bring outside expertise into your fundraising process?