Situation quite difficult to say whether it's right time to buy or not. Suppose you bought more in hope that it goes back up but then the negative trend keeps going and your portfolio goes down as well.
The market is not still stable and it is really hard to say something. But l think there is always a chance, it depends on ability. l mean if you can make enough research. l believe that there are still some good projects. However l can not believe in every project, most of them are not profitable. l prefer waiting and analyzing, but on the other than a lot of coins have raised. No doubt most of them will decrease in the near future. We need to be patient, it is not the best time.