This prediction is based on historical performance of Cryptocurrency after reaching an all time high, then following lower highs and higher lows of consolidation, namely Bitcoin. I believe Cardano is going to follow Bitcoin's consolidation pattern which will follow the higher lows and lower highs as buy and sell signals.
Next high for BTC would be $16,900 range, roughly a 200% increase then followed by a pullback consolidation to $8,000 range.
That would set Cardano's new low after $0.42 would be around $0.20 cents, I don't think that ADA will follow the same lower highs and higher lows patterns like BTC, instead it will most likely follow a bullish ascending triangle formation.