It is very difficult to predict when the altcoin bubble will end because now the potential for altcoin prices will continue to increase and of course this is due to the positive trend that is happening in bitcoin at this time, I personally  not to try get in altcoins in their current condition because the possibility of the risk of loss occurring will be more big when the bubble bursts and my advice is better to be patient and wait for the right moment to get back into altcoin.