Theres nothing to worry about,investing in crypto takes alot of patience,every coins has its own timeframe to boost its value in the market,investors must know the concept of cryptocurrencies.History of bitcoin was one of the great example about having value and look at bitcoin now it stands as the strongest digital currency of all time therefore any coins could grow its value in the right time.We just have to wait a little longer.
Well this depends on the investor if they will invest on other coins but i think this would be the best thing to do,not to just focus on only one coin if you really want huge profit.