You need a bit of confidence that it's going to keep going up in the long run... as long as that's the case, in a stable upwards trend as we were used from bitcoin, you can buy the small dips and sell the small lows several times a day and if there's a dip that goes deeper, you just wait till it goes up again. Nothing else can happen. In times like this, you can never be sure, so you only buy when there's much corroborative that an up is real. As long as that's not the case, you stay out.