OP why do you believe the advice of others? One should not invest on the advice of others in cryptocurrencies. If you want to invest in Bitcoin you can invest anytime. But you must hold the investment for a long time. If you can't hold on to Bitcoin investment for a long time then you may end up with losses instead of profits. Bitcoin price is currently at $64k plus, no one can accurately say whether Bitcoin price will go down or up. So you can invest in DCA method. If you invest in DCA method you can buy bitcoins at average price.