It seems that the price of Altcoin has stopped in one place and is getting lower. If the price of Altcoin stays at that fixed point, then it is very difficult for the price of Altcoin to fall. If the price of Altcoin now becomes too high, then people will start buying more and more, which will cause the price of Altcoin to go up. Is that right?
You should make some more study about the price growth and price dump. There are times in every graph where only newbies accumulate the markets and that is the time when the markets can move in any unknown direction. Most of the times when bot orders and professional traders are accumulated onto the markets than we could see stable growth or a dump because they love to follow the charts and patterns which makes it easier to understand the further movements on any chart.
If the price gets on the ATH peak than I do not really think that more and more people would buy that coin because it is already onto the peak and it is the time to sell those coins and not to buy more. Newbies would make mistake my buying onto the peak and professionals would already exit the markets with their pockets full of profits.