If you want to reinvest from shitcoins/memecoins/newcoins to the top coins with strong fundamentals, it is good idea. It means you relocate your funds to safer coins. I also already take profits on some coins that I assume they already hit the peak and look like difficult to continue increasing. Most of them are hype coins with weak fundamentals and new altcoins, these type of coins won't last a long time increasing their values. Even some new altcoins only increase the prices when it is launched in the exchange for the first time, after that they tend to decrease their values.

However, it is also good if you divide the profits. A half convert to USDT and the rest to reinvest to top coins. In this way, you can safe some profits but you still can continue to invest in safe coins. Sometimes, I choose this way if I think it won't be a really good time for using all the funds for collecting more coins. Just take a research first, it will help you to take a better decision!! Good luck...