It never hurts to collect goods gradually at a market where you are an early bird. Cash? If there is, that's fine, but if not, long term investors should not worry.
Let's think about it this way: "in the trend", at which correction will you be able to buy $RNDR at 1.60? At what crash will you be able to buy $INJ at 4.50? It is a dream to reach these levels before the bull runs out. Even if you take it afterwards, it doesn't mean anything. That's why it's important to follow the cycle, know where to save, and start your journey with a full bag. By taking these lessons well, you can be more rational in the 28'-29' trend.