If you want to invest in this market then start it now and if the market takes a dip from here then put another fund and put money at regular intervals. This way, you do cost averaging and get good benefits on the revival of a bull run.
Some experienced guys, who work with the cryptocurrencies for years say that it is better to wait for the time when the altcoins and BTC will just start gaining. It will be the sign that the market can grow and you will earn.
The question is how to determine this moment. When btc stopped at $ 6k and the alts were green, it seemed to everyone that the market began to recover, but after two weeks or less the market continued to fall