If Bitcoin dips significantly again, around 60k, a solid strategy is to swap your other altcoins for Bitcoin since, in the near future, Bitcoin is likely to reclaim its all-time high, and no other cryptos will outperform Bitcoin's gains. At that point, you can trade your Bitcoin back for the altcoins you had before, and you'll rack up a nice extra stash of your cryptos.
It's all about experimenting; I did it recently and scored a few extra XRP.