That's not an easy thing to do, you can't always follow big fishes and act before they do so that you can stay on the safer side because you won't always know about it. A lot of whales manipulate the market whenever they feel like buying or selling, and they do it without letting anyone know unless there are people following every single move of theirs and find that they've moved coins from a wallet to an exchange which probably means they are going to do something.
But even that isn't possible and such news barely comes to the surface before it happens. So expecting to time the market perfectly will only make you disappointed every time. It's better to learn basic analysis and make your moves according to the market movements that are expected instead of following the unexpected.
Whales know very well that their movements are being monitored by all market participants, so it should be obvious that in order to avoid detection they move their coins in small amounts to not bring attention to themselves, and only once they are ready they make a big movement so everyone notices they have been buying or selling and incite other traders to do the same, however by the time those people find out about what happened it is too late and the whales have a massive advantage over the rest of them.
That's right, we can't keep relying on whale movements and entry to take advantage of it, it could be us who are used by them to take advantage. However, they are smart in doing this, how many people have suffered losses in the end because they were abandoned by the whales.
We must stand on our own feet, I will not mind if we want to be next to the whales, but we must also have limits so that we do not suffer losses in the end.
We have to be faster than them, when we enter or when we exit, and it requires knowledge to make such analysis.