By those instance what will be the choice of selection. Over which cryptocurrencies you'll plan to move your investments. I personally haven't got much of holding, if something happens against prediction only way is to move towards stablecoins.
In my opinion always invest in real projects and just like anything else ride the waves up and down. Jumping from coin to coin with just hoping something bumps back up is a bad idea unless you're going to stare at your screen all day. moving in stablecoins in falling market is a good idea but HODL is better. however if you want to do something you can rebalance your porfolio if there are coins that you're not 100% sure and you're not losing too much on these. Increase your share on the coins you trust the most, leave some in a trading pair to buy further dips and keep calm.
jumping from coin to coin is a bad idea only for those people who do not understand anything in those coins that they use for this. I personally allocate 10 percent of my money to constantly look for coins to buy and sell them and then move on to other coins