Here is your perfect answer, build your portfolio one year to BTC halving that's when new funds always enter the market, look back into 2020 many big whales today bought their coins at that time because they know what halving means for crypto space
Every year there are always different things that happen in the crypto space so you also can't fully take references from previous years to serve as a baseline this year, because what I see at this time the crypto space has changed very drastically.