Well, if your goal is investing, the sooner the better. We don't know what the halving will bring. It's possible that prices will immediately rise, and that will be profitable when we start investing from now on, especially if you believe in several altcoins which will have high prices after the halving. There are many advantages to starting as soon as we can. However, I also started investing long before the halving happened because we don't know when prices will start to rise.